{"id":12996,"date":"2025-08-11T09:42:04","date_gmt":"2025-08-11T09:42:04","guid":{"rendered":"https:\/\/dianapps.com\/blog\/?p=12996"},"modified":"2025-08-11T10:00:23","modified_gmt":"2025-08-11T10:00:23","slug":"react-native-081","status":"publish","type":"post","link":"https:\/\/www.dianapps.com\/blog\/react-native-081\/","title":{"rendered":"React Native 0.81 introduces precompiled builds for iOS"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Big news: React Native 0.81 introduces precompiled builds for iOS development services. What\u2019s even bigger? React Native\u2019s collaboration with Expo and Meta, yes, you heard that right.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The latest release speaks for itself: faster build times, an opt-in mechanism, default integration in Expo SDK 54, and future-ready compatibility. React Native developers can now expect build times to drop by up to 10\u00d7, thanks to dramatic improvements across its core libraries and native dependencies.<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter  wp-image-13031\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/React-native-0.81.png\" alt=\"React native 0.81 \" width=\"905\" height=\"509\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/React-native-0.81-768x432.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/React-native-0.81-640x360.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/React-native-0.81-400x225.png 400w\" sizes=\"(max-width: 905px) 100vw, 905px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Special thanks to Riccardo Cipolleschi and Christian Falch for spearheading this powerful shift in the iOS development workflow.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What-Exactly-Is-Changing\"><\/span><span style=\"font-weight: 400;\">What Exactly Is Changing?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">With version 0.81, React Native now ships a precompiled version of its iOS dependencies via an XCFramework. Instead of rebuilding the entire native dependency graph every time you clean your project, developers can now leverage a prebuilt binary that drastically reduces build time.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This is made possible through:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A new environment variable: <\/span><span style=\"font-weight: 400;\">RCT_USE_PREBUILT_RNCORE=1<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A prebuilt <\/span><span style=\"font-weight: 400;\">ReactNativeDependencies.xcframework<\/span><span style=\"font-weight: 400;\"> that includes Glog, Folly, DoubleConversion, and other third-party dependencies<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Seamless integration with CocoaPods, meaning minimal disruption to your current setup<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Precompiled-React-Native-Core-and-Dependencies-for-iOS\"><\/span><span style=\"font-weight: 400;\">Precompiled React Native Core and Dependencies for iOS<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">React Native 0.81 introduces a precompiled build system for iOS, delivering a significant performance leap in build speeds. Traditionally, each clean build of a React Native iOS app required recompiling its native dependencies, Folly, Glog, DoubleConversion, etc., from source. With 0.81, these libraries now come prebuilt inside a packaged binary called ReactNativeDependencies.xcframework.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This means:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Less time spent waiting for builds.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fewer CPU cycles burned during development.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A cleaner and more consistent developer experience, especially on CI servers and new machine setups.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Early benchmarks have shown build times reduced from 120 seconds to as low as 10 seconds on newer Apple silicon machines.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Collaboration-Between-Meta-and-Expo\"><\/span><span style=\"font-weight: 400;\">Collaboration Between Meta and Expo<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This update is not just a Meta initiative, it\u2019s the result of a powerful collaboration between Meta and the Expo team. Both companies have worked together to rethink the React Native build experience, with a shared goal: make iOS development faster, smoother, and more predictable for developers everywhere.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Expo has already begun integrating this functionality, and it will become the default behavior starting with Expo SDK 54, expected later this year. That means app creators using Expo will benefit from this optimization automatically, no extra setup needed.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Optional-via-RCT-USE-PREBUILT-RNCORE1\"><\/span><span style=\"font-weight: 400;\">Optional via RCT_USE_PREBUILT_RNCORE=1<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">In React Native 0.81, the precompiled build path is opt-in by design, giving developers the flexibility to test, adopt, and report feedback before it becomes default.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To enable the feature:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Open your terminal or CI environment<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Set the following environment variable: export RCT_USE_PREBUILT_RNCORE=1<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Run <\/span><span style=\"font-weight: 400;\">pod install<\/span><span style=\"font-weight: 400;\"> again in your iOS directory<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">That\u2019s it. You\u2019ll now be building against the precompiled framework instead of source code, without changing your existing app code.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Swift-Package-Manager-Alignment-and-XCFramework-Usage\"><\/span><span style=\"font-weight: 400;\">Swift Package Manager Alignment and XCFramework Usage<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">React Native 0.81\u2019s architecture is inching closer to modern iOS development standards, aligning itself with tools like Swift Package Manager (SPM). The new precompiled system ships as an XCFramework, a binary packaging format that supports multiple architectures (e.g., arm64, x86_64) and platforms.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Benefits of this shift:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Better compatibility with Apple\u2019s native toolchain<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Easier modular integration in Swift\/Obj-C projects<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Paves the way for future SPM support and ABI-stable module distribution<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"How-Precompiled-Builds-Work-Under-the-Hood\"><\/span><span style=\"font-weight: 400;\">How Precompiled Builds Work Under the Hood?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The magic of React Native 0.81\u2019s speed boost lies in how it changes the way iOS dependencies are compiled and linked, without changing how you write code.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Meet-ReactNativeDependenciesxcframework\"><\/span><span style=\"font-weight: 400;\">Meet ReactNativeDependencies.xcframework<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">At the core of this improvement is a precompiled binary package:<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\"> ReactNativeDependencies.xcframework.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This XCFramework bundles the compiled versions of essential native C++ libraries like:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Folly<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Glog<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DoubleConversion<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">React-callinvoker<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Other low-level native dependencies used by React Native core<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Instead of building these from scratch on each clean build (which can be slow and resource-heavy), your project simply links to this precompiled binary, shaving off minutes from the overall build time.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"How-It-Integrates-With-CocoaPods\"><\/span><span style=\"font-weight: 400;\">How It Integrates With CocoaPods<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">React Native still uses CocoaPods to manage iOS dependencies. With 0.81, the new system works by conditionally swapping the source-based pods for a binary pod when the flag is set.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Here\u2019s how it works:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">By default, CocoaPods pulls in the source versions of the native libraries.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">When you enable the environment variable:<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">export RCT_USE_PREBUILT_RNCORE=1<\/span><\/p>\n<p><span style=\"font-weight: 400;\">React Native\u2019s Podspecs automatically switch to use the <\/span><b>precompiled version<\/b><span style=\"font-weight: 400;\"> via <\/span><span style=\"font-weight: 400;\">React-Codegen.podspec.json<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You don\u2019t have to manually change your Podfile, just set the variable and run <\/span><span style=\"font-weight: 400;\">pod install<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Clean-Builds-Smarter-Compiles\"><\/span><span style=\"font-weight: 400;\">Clean Builds, Smarter Compiles<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">In traditional builds, a full clean (e.g. deleting DerivedData) results in recompiling everything, including React Native\u2019s native libraries. But with the precompiled system:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Your app skips the most time-consuming part (native dependency build)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You get <\/span><b>faster cold starts<\/b><span style=\"font-weight: 400;\"> and more consistent build behavior across environments<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This is especially beneficial for:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Large teams using CI\/CD<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">New developers onboarding to projects<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Machines with slower CPUs or less memory<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"File-Structure-Snapshot\"><\/span><span style=\"font-weight: 400;\">File Structure Snapshot<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">After enabling precompiled builds and installing pods, you&#8217;ll find:<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13030\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/File-Structure-Snapshot.png\" alt=\"File Structure Snapshot\" width=\"830\" height=\"224\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/File-Structure-Snapshot.png 830w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/File-Structure-Snapshot-768x207.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/File-Structure-Snapshot-640x173.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/File-Structure-Snapshot-400x108.png 400w\" sizes=\"(max-width: 830px) 100vw, 830px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">This XCFramework supports all major architectures (arm64, x86_64, etc.), so you can run it on simulators and physical devices without conflict.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Forward-Compatible-Design\"><\/span><span style=\"font-weight: 400;\">Forward-Compatible Design<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">By adopting XCFrameworks and environment-controlled flags, React Native is preparing for:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>SPM (Swift Package Manager)<\/b><span style=\"font-weight: 400;\"> integration in future versions<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>ABI-stable prebuilt modules<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Granular precompiled components<\/b><span style=\"font-weight: 400;\"> (potentially prebuilt Hermes or UI modules down the road)<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This architecture gives React Native more flexibility to modernize its toolchain while keeping compatibility with today\u2019s projects.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Performance-Benchmarks-Real-World-Impact\"><\/span><span style=\"font-weight: 400;\">Performance Benchmarks &amp; Real-World Impact<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The shift to precompiled builds in React Native 0.81 isn\u2019t just theoretical, it\u2019s been proven with real-world benchmarks to deliver drastic improvements in build speed, consistency, and efficiency.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Up-to-10%C3%97-Faster-Build-Times\"><\/span><span style=\"font-weight: 400;\">Up to 10\u00d7 Faster Build Times<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Developers testing RN 0.81 have reported staggering improvements:<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13036\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Up-to-10\u00d7-Faster-Build-Times.png\" alt=\"Up to 10\u00d7 Faster Build Times\" width=\"907\" height=\"333\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Up-to-10\u00d7-Faster-Build-Times.png 907w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Up-to-10\u00d7-Faster-Build-Times-768x282.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Up-to-10\u00d7-Faster-Build-Times-640x235.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Up-to-10\u00d7-Faster-Build-Times-400x147.png 400w\" sizes=\"(max-width: 907px) 100vw, 907px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">These numbers will vary based on project complexity, hardware specs, and caching, but the trend is clear: precompiled builds dramatically reduce wait time.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Real-World-Use-Cases-That-Benefit-the-Most\"><\/span><span style=\"font-weight: 400;\">Real-World Use Cases That Benefit the Most<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>CI\/CD Pipelines<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">Every second saved in your CI workflow is money saved. With precompiled builds, build agents don\u2019t waste time compiling the same dependencies repeatedly.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>New Developer Onboarding<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">Cloning and building a project from scratch is no longer a chore. New team members can be up and running in minutes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Teams on Lower-Spec Hardware<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">Developers using older Macs or shared environments will feel a huge difference in build reliability and speed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Frequent Clean Builds<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">If your workflow involves clean builds (e.g., after switching branches or resolving Xcode issues), you\u2019ll instantly appreciate the time gain.<\/span><\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"More-Stable-and-Predictable-Build-Behavior\"><\/span><span style=\"font-weight: 400;\">More Stable and Predictable Build Behavior<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">By using the same prebuilt binary across machines, React Native ensures:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fewer build inconsistencies<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduced chances of native dependency conflicts<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Easier debugging when issues arise (since the core dependencies remain constant)<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This consistency is particularly valuable for teams with diverse setups and remote work environments.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Community-Feedback\"><\/span><span style=\"font-weight: 400;\">Community Feedback<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The React Native community is buzzing with excitement:<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13029\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback.png\" alt=\"Community Feedback\" width=\"586\" height=\"815\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback.png 586w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback-400x556.png 400w\" sizes=\"(max-width: 586px) 100vw, 586px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">\u201cReact Native 0.81 just dropped and brings <\/span><b>precompiled builds<\/b><span style=\"font-weight: 400;\"> for iOS! iOS builds are now <\/span><b>10x faster<\/b><span style=\"font-weight: 400;\">. This is a <\/span><b>HUGE<\/b><span style=\"font-weight: 400;\"> win!\u201d<\/span><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/twitter.com\/expo\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">\u00a0<\/span><span style=\"font-weight: 400;\">@expo<\/span><\/a><span style=\"font-weight: 400;\"> on Twitter\/X<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13028\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback-2.png\" alt=\"Community Feedback (2)\" width=\"914\" height=\"689\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback-2.png 914w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback-2-768x579.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback-2-463x348.png 463w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback-2-640x482.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Community-Feedback-2-400x302.png 400w\" sizes=\"(max-width: 914px) 100vw, 914px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">\u201cThis is a game-changer. My builds went from 2 minutes to under 20 seconds. Thank you Meta + Expo!\u201d<\/span><span style=\"font-weight: 400;\">,\u00a0 Developer comment on<\/span><a href=\"https:\/\/www.reddit.com\/r\/reactnative\/comments\/1m8efok\" target=\"_blank\" rel=\"nofollow noopener\"> <span style=\"font-weight: 400;\">Reddit<\/span><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why-This-Matters-to-You-Dev-Teams-Businesses\"><\/span><span style=\"font-weight: 400;\">Why This Matters to You (Dev Teams &amp; Businesses)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">React Native 0.81\u2019s introduction of precompiled iOS builds isn\u2019t just a technical enhancement, it\u2019s a strategic shift that brings meaningful advantages to developers, engineering teams, and businesses aiming to scale their mobile apps efficiently.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Faster-Development-Cycles-Faster-Time-to-Market\"><\/span><span style=\"font-weight: 400;\">Faster Development Cycles = Faster Time to Market<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">In fast-paced development environments, time is everything. Precompiled builds cut down hours of cumulative wait time every week, enabling:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Faster feature testing<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">More frequent iterations<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Quicker deployments<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">For product teams, this means you can ship updates more often, respond to user feedback faster, and stay ahead of your competition.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Reduced-Infrastructure-Costs\"><\/span><span style=\"font-weight: 400;\">Reduced Infrastructure Costs<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Long builds burn resources, especially on CI\/CD platforms. By avoiding unnecessary recompilation of native modules:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Build times are reduced significantly<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Server runtime and resource usage drops<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Companies save money on build agent minutes and cloud usage<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Multiply that by every team member and every deployment, and the savings scale fast.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Better-Developer-Experience\"><\/span><span style=\"font-weight: 400;\">Better Developer Experience<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Developer satisfaction isn\u2019t just about what you build, it\u2019s about how you build it.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Precompiled builds provide:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A smoother onboarding process for new developers<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fewer build failures or inconsistencies across machines<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Less time wasted debugging native compilation errors<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">It\u2019s a boost in productivity and morale, two things every engineering leader should care about.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Future-Proofing-Your-App-Architecture\"><\/span><span style=\"font-weight: 400;\">Future-Proofing Your App Architecture<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">By adopting precompiled dependencies and XCFrameworks, your app aligns with:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Apple\u2019s modern native tooling (XCFramework, SPM)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">React Native\u2019s new architecture trajectory<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Upcoming features like ABI-stable modules and more efficient native-module consumption<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This positions your mobile stack for scalability, maintainability, and modular growth, crucial for enterprise apps and long-term projects.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Better-Cross-Team-Collaboration\"><\/span><span style=\"font-weight: 400;\">Better Cross-Team Collaboration<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">When every developer uses the same precompiled libraries:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fewer environment-specific issues occur<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shared build environments (especially remote or offshore teams) stay in sync<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It\u2019s easier to enforce consistent workflows across multiple teams and contributors<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This makes managing larger, distributed engineering teams simpler and more reliable. In short: React Native 0.81 isn\u2019t just an update, it\u2019s a workflow revolution.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Limitations-What-to-Know-Before-You-Flip-the-Switch\"><\/span><span style=\"font-weight: 400;\">Limitations &amp; What to Know Before You Flip the Switch<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">As promising as React Native 0.81\u2019s precompiled build system is, it\u2019s important to understand the current boundaries and considerations before fully committing. This feature is in its early stages, and while it&#8217;s production-ready for many use cases, there are some caveats to keep in mind.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Its-Opt-In-For-Now\"><\/span><span style=\"font-weight: 400;\">It\u2019s Opt-In (For Now)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">React Native 0.81 ships with precompiled builds as an opt-in feature. That means:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You need to <\/span><b>manually enable it<\/b><span style=\"font-weight: 400;\"> using the <\/span><span style=\"font-weight: 400;\">RCT_USE_PREBUILT_RNCORE=1<\/span><span style=\"font-weight: 400;\"> environment variable.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It\u2019s <\/span><b>not enabled by default<\/b><span style=\"font-weight: 400;\"> unless you&#8217;re using Expo (where it becomes the default starting with SDK 54).<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This gives developers control over when and how they adopt the change, but also means you won\u2019t see benefits unless you actively configure it.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Only-Core-Dependencies-Are-Precompiled\"><\/span><span style=\"font-weight: 400;\">Only Core Dependencies Are Precompiled<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The current precompiled system covers React Native&#8217;s third-party native dependencies, such as:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Glog<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Folly<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DoubleConversion<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CallInvoker<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">However, the React Native core itself (like React Native\u2019s Obj-C\/Swift modules) is still built from source. That means:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You won\u2019t see 100% elimination of native build times.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The biggest gains are for smaller projects where RN dependencies form the bulk of the native code.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Future versions may expand the scope to include the core framework and Hermes engine.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Third-Party-Libraries-May-Lag-Behind\"><\/span><span style=\"font-weight: 400;\">Third-Party Libraries May Lag Behind<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">If you\u2019re using a lot of third-party native modules, be aware:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Those libraries <\/span><b>still compile from source<\/b><span style=\"font-weight: 400;\"> unless their authors also provide precompiled versions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If a library expects to patch or alter the native dependencies, it may be <\/span><b>incompatible<\/b><span style=\"font-weight: 400;\"> with the prebuilt binary.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Until the ecosystem fully catches up, you might see mixed results depending on your dependency graph.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Debugging-Native-Code-Becomes-Less-Transparent\"><\/span><span style=\"font-weight: 400;\">Debugging Native Code Becomes Less Transparent<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Precompiled binaries are opaque, so if you need to debug a crash inside Folly or Glog, you won\u2019t have direct access to the source code unless you disable the flag.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">While this won\u2019t impact most app devs, it might be relevant for:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Teams working on native modules<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Devs building custom forks of RN dependencies<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Advanced debugging and profiling scenarios<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Clean-Builds-Might-Still-Be-Required-Occasionally\"><\/span><span style=\"font-weight: 400;\">Clean Builds Might Still Be Required Occasionally<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Although the precompiled system reduces clean build pain, you may still need to:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Clear <\/span><span style=\"font-weight: 400;\">DerivedData<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reset CocoaPods<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reinstall the XCFramework<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This is especially true if:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">You\u2019re switching between projects that use different RN versions<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Your CI pipeline has aggressive caching rules<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Platform-Scope-iOS-Only-For-Now\"><\/span><span style=\"font-weight: 400;\">Platform Scope: iOS Only (For Now)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This release only supports iOS builds. Android projects continue to build React Native and its dependencies from source.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, the success of precompiled iOS builds may inspire a similar system for Android (AAR bundles) in the near future.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For everyone else, the benefits far outweigh these caveats, and many issues will likely be resolved as the ecosystem evolves.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Whats-Next-Future-Forward-with-Expo-SDK-54\"><\/span><span style=\"font-weight: 400;\">What\u2019s Next: Future-Forward with Expo SDK 54<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">React Native 0.81\u2019s precompiled builds mark the beginning of a larger vision, one that Expo SDK 54 is about to take to the next level. As the React Native ecosystem evolves, this update lays the groundwork for a faster, smarter, and more scalable development workflow that benefits everyone from indie devs to enterprise teams.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Precompiled-Builds-Become-Default-in-Expo-SDK-54\"><\/span><span style=\"font-weight: 400;\">Precompiled Builds Become Default in Expo SDK 54<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Expo has confirmed that starting with SDK 54, precompiled builds for iOS will be enabled by default.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">That means:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">No need to set environment variables manually<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">All new iOS projects will automatically benefit from faster build times<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The transition will be seamless for Expo users (managed and bare workflows)<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Expo\u2019s integration ensures that developers using their ecosystem are first in line to benefit from performance improvements, with minimal configuration and zero disruption.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"A-Call-to-Library-Authors-Ship-Precompiled-Binaries\"><\/span><span style=\"font-weight: 400;\">A Call to Library Authors: Ship Precompiled Binaries<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">To extend the benefits of this update, Expo and Meta are encouraging open-source library maintainers to:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Publish <\/span><b>prebuilt native modules<\/b><span style=\"font-weight: 400;\"> (as XCFrameworks or similar)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Support ABI-stable builds<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduce dependency on raw source compilation for native code<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This will help eliminate remaining bottlenecks in larger projects and make precompiled builds truly <\/span><b>end-to-end<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toward-a-Modular-Modern-Native-Architecture\"><\/span><span style=\"font-weight: 400;\">Toward a Modular, Modern Native Architecture<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Precompiled builds are a stepping stone toward:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Swift Package Manager (SPM) adoption<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Modular RN components (like precompiled Hermes or Fabric renderer)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ABI-stable modules that make versioning and upgrades more seamless<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This aligns React Native more closely with Apple\u2019s native ecosystem and unlocks:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Easier native module sharing<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Faster upgrades across major RN versions<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Simplified dependency management for hybrid teams (iOS + React Native devs)<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"What-to-Expect-in-Future-React-Native-Releases\"><\/span><span style=\"font-weight: 400;\">What to Expect in Future React Native Releases<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Expansion to Android<\/b><span style=\"font-weight: 400;\">: A similar precompiled strategy using Android Archive (AAR) packages may be introduced in future versions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Better debugging tools<\/b><span style=\"font-weight: 400;\"> for precompiled binaries (symbol maps, trace logs).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Granular control<\/b><span style=\"font-weight: 400;\"> over which modules are precompiled and which are built from source.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Improved performance on CI\/CD systems<\/b><span style=\"font-weight: 400;\"> with even smarter caching and prefetching.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Ecosystem-Wide-Adoption-Is-on-the-Horizon\"><\/span><span style=\"font-weight: 400;\">Ecosystem-Wide Adoption Is on the Horizon<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">As more tools and libraries adopt precompiled support:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Build times will shrink even further<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dev teams will face fewer native build issues<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The React Native ecosystem will become more accessible to teams with varying levels of native expertise<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The combination of React Native 0.81 + Expo SDK 54 marks the start of a new era in cross-platform development, one where native performance meets JavaScript agility.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How-to-Enable-Precompiled-iOS-Builds-in-Your-Project\"><\/span><span style=\"font-weight: 400;\">How to Enable Precompiled iOS Builds in Your Project<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Ready to speed up your iOS builds? Enabling precompiled builds in React Native 0.81 is surprisingly simple, and you can try it out today with just a few small changes to your setup.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Follow the steps below to get started:<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Upgrade-to-React-Native-081\"><\/span><span style=\"font-weight: 400;\">1. Upgrade to React Native 0.81<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Ensure your project is using React Native version 0.81.0 or higher.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You can upgrade using:<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13037\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Upgrade-to-React-Native-0.81.png\" alt=\"Upgrade to React Native 0.81\" width=\"832\" height=\"126\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Upgrade-to-React-Native-0.81.png 832w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Upgrade-to-React-Native-0.81-768x116.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Upgrade-to-React-Native-0.81-640x97.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Upgrade-to-React-Native-0.81-400x61.png 400w\" sizes=\"(max-width: 832px) 100vw, 832px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"2-Set-the-Environment-Variable\"><\/span><span style=\"font-weight: 400;\">2. Set the Environment Variable<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">To opt into the precompiled build system, set the environment variable:<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13035\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable.png\" alt=\"Set the Environment Variable\" width=\"827\" height=\"134\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable.png 827w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable-768x124.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable-640x104.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable-400x65.png 400w\" sizes=\"(max-width: 827px) 100vw, 827px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">You can add this to your shell config (<\/span><span style=\"font-weight: 400;\">.zshrc<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">.bashrc<\/span><span style=\"font-weight: 400;\">, or <\/span><span style=\"font-weight: 400;\">.bash_profile<\/span><span style=\"font-weight: 400;\">) or pass it inline:<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13034\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable-2.png\" alt=\"Set the Environment Variable (2)\" width=\"836\" height=\"129\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable-2.png 836w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable-2-768x119.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable-2-640x99.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Set-the-Environment-Variable-2-400x62.png 400w\" sizes=\"(max-width: 836px) 100vw, 836px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">In CI\/CD environments, add it to your build step configuration.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"3-Run-Pod-Install\"><\/span><span style=\"font-weight: 400;\">3. Run Pod Install<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Navigate to your iOS directory and run:<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13033\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Run-Pod-Install.png\" alt=\"Run Pod Install\" width=\"825\" height=\"173\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Run-Pod-Install.png 825w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Run-Pod-Install-768x161.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Run-Pod-Install-640x134.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Run-Pod-Install-400x84.png 400w\" sizes=\"(max-width: 825px) 100vw, 825px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">This will fetch and integrate the <\/span><span style=\"font-weight: 400;\">ReactNativeDependencies.xcframework<\/span><span style=\"font-weight: 400;\"> binary into your project via CocoaPods.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"4-Build-Your-App\"><\/span><span style=\"font-weight: 400;\">4. Build Your App<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Now, build the app as usual using Xcode or the CLI:<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13027\" src=\"https:\/\/dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Build-Your-App.png\" alt=\"Build Your App\" width=\"827\" height=\"135\" srcset=\"https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Build-Your-App.png 827w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Build-Your-App-768x125.png 768w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Build-Your-App-640x104.png 640w, https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/Build-Your-App-400x65.png 400w\" sizes=\"(max-width: 827px) 100vw, 827px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">You should notice significantly faster build times, especially on fresh builds or new machines.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"5-Optional-Confirm-Integration\"><\/span><span style=\"font-weight: 400;\">5. (Optional) Confirm Integration<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">To confirm that your project is using the precompiled framework:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check your <\/span><span style=\"font-weight: 400;\">ios\/Pods\/<\/span><span style=\"font-weight: 400;\"> directory for the <\/span><span style=\"font-weight: 400;\">ReactNativeDependencies.xcframework<\/span><span style=\"font-weight: 400;\"> file.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Review your build logs; the native dependencies should no longer compile from source.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Pro-Tip-Automate-It-in-Your-Podfile\"><\/span><span style=\"font-weight: 400;\">Pro Tip: Automate It in Your Podfile<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">For better maintainability, you can automate the toggle inside your Podfile:<\/span><\/p>\n<pre class=\"theme:github font-size:14 nums:false lang:default decode:true\">use_prebuilt_rncore = ENV['RCT_USE_PREBUILT_RNCORE'] == '1'\r\n\r\n\r\nif use_prebuilt_rncore\r\n\r\n\u00a0\u00a0pod 'React-CoreModules', :path =&gt; '..\/node_modules\/react-native\/React\/CoreModules'\r\n\r\n\u00a0\u00a0# Other pods using precompiled config\r\n\r\nend<\/pre>\n<p><span style=\"font-weight: 400;\">This allows your team to switch between precompiled and source builds based on the environment, ideal for hybrid workflows or debugging sessions.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Compatibility-Checklist\"><\/span><span style=\"font-weight: 400;\">Compatibility Checklist<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compatible with bare React Native apps<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compatible with Expo (SDK 54+ enables it by default)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Not supported on Android yet<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Some third-party native modules may still compile from source<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">May affect debugging inside native dependency code<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Final-Thoughts\"><\/span><span style=\"font-weight: 400;\">Final Thoughts<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The release of React Native 0.81 marks a significant milestone in the iOS development journey, ushering in precompiled builds, drastically faster build times, and tighter collaboration between Meta and Expo. This update isn&#8217;t just a performance tweak; it&#8217;s a rethinking of how React Native apps are built and maintained at scale.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For developers and teams who\u2019ve long waited for reduced compile cycles, smoother onboarding on CI\/CD, and improved local build workflows, this is the update you\u2019ve been waiting for.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">As the React Native community continues to evolve, innovations like this one reaffirm its commitment to <\/span><a href=\"https:\/\/dianapps.com\/react-native-app-development\"><b>React native app development company<\/b><\/a>&#8216;s <span style=\"font-weight: 400;\">\u00a0productivity, modern tooling, and future-ready architecture.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Now&#8217;s the time to upgrade, experiment, and see how much time you can save.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Big news: React Native 0.81 introduces precompiled builds for iOS development services. What\u2019s even bigger? React Native\u2019s collaboration with Expo and Meta, yes, you heard that right. The latest release speaks for itself: faster build times, an opt-in mechanism, default integration in Expo SDK 54, and future-ready compatibility. React Native developers can now expect build [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":13025,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_wp_applaud_exclude":false,"footnotes":""},"categories":[5],"tags":[1509,1510,1209],"class_list":["post-12996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology","tag-react-native-0-81","tag-react-native-precompiled-builds-for-ios","tag-react-native-versions"],"featured_image_src":{"landsacpe":["https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/React-Native-0.81-Precompiled-build-for-iOS-1-1140x445.png",1140,445,true],"list":["https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/React-Native-0.81-Precompiled-build-for-iOS-1-463x348.png",463,348,true],"medium":["https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/React-Native-0.81-Precompiled-build-for-iOS-1-300x169.png",300,169,true],"full":["https:\/\/www.dianapps.com\/blog\/wp-content\/uploads\/2025\/08\/React-Native-0.81-Precompiled-build-for-iOS-1.png",1536,864,false]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.12 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>React Native 0.81 introduces precompiled builds for iOS<\/title>\n<meta name=\"description\" content=\"React Native 0.81 is out and thriving for procompiled build for iOS. Read all about this release from what\u2019s new to how to implement it.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dianapps.com\/blog\/react-native-081\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"React Native 0.81 introduces precompiled builds for iOS\" \/>\n<meta property=\"og:description\" content=\"React Native 0.81 is out and thriving for procompiled build for iOS. 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