Using native features in mobile apps improves speed and smoothness. Native code runs directly on the device hardware, helping apps reach 60 frames per second for smooth animations. It also reduces battery drain by using optimized system APIs. Accessing native sensors like GPS or camera is faster and more reliable than web-based alternatives.
To keep 60fps, minimize bridge calls between React Native and native modules. Batch native feature requests and cache results when possible. Use native UI components for heavy tasks like video playback or maps. Profile your app with tools like Xcode Instruments or Android Profiler to spot slow native calls and optimize them.
Adding native features can increase app size due to extra native libraries. Keep native modules lean and remove unused code. Lazy load native features only when needed to reduce startup time. Use code splitting and optimize assets to keep the app bundle small and launch fast.
iOS uses UIKit and Swift/Objective-C for native features, while Android uses Jetpack Compose or XML layouts with Kotlin/Java. React Native bridges to these native APIs differently on each platform. iOS requires code signing and provisioning profiles for native features, Android needs APK/AAB signing. Some native features may behave slightly differently due to platform design.
Apple App Store requires apps to use native features responsibly, respecting user privacy and permissions (e.g., camera, location). Android Play Store also enforces permission transparency and limits background access to sensors. Both stores require apps to handle native feature failures gracefully and provide clear user consent dialogs.
Your app takes 5 seconds to load this screen. What's likely wrong? You might be making too many synchronous native calls on the main thread or loading heavy native modules upfront instead of lazy loading them.