Cross-platform mobile development exists to solve one expensive problem: maintaining separate native codebases for Android and iOS. React Native (Meta) and Flutter (Google) are the two dominant answers to that problem today, and they take genuinely different technical approaches.
React Native writes UI in JavaScript/TypeScript using React components, which then map to real native UI components (a React Native `<View>` becomes a real native Android or iOS view). This gives apps a feel closer to platform-native conventions by default.
Flutter uses Dart and renders every pixel itself through its own rendering engine (Skia), rather than mapping to native components. This gives Flutter apps a completely consistent look across both platforms — the same custom UI on Android and iOS — but that consistency can also mean UI that doesn't feel fully "native" to either platform's users.
Flutter generally has an edge in raw rendering performance, especially for complex animations, because it doesn't need to bridge to native components — it draws everything directly. React Native's performance has improved significantly with its newer architecture (Fabric and the JSI bridge), closing much of the historical gap, but Flutter still tends to win in animation-heavy benchmarks.
React Native benefits from the much larger overall JavaScript/React ecosystem — if you already know React for web, the transition to React Native is fast, and you can share logic (though not UI) between web and mobile codebases. It also currently has a larger job market, particularly outside of countries where Flutter has been heavily promoted.
Flutter's ecosystem is smaller but growing quickly, with strong first-party support directly from Google and increasingly polished official packages for common needs like state management (Riverpod, Bloc).
If you already know React from web development, React Native is the faster path — you're learning new APIs, not a new language and paradigm. If you're starting from zero with no web development background, Flutter's tooling (hot reload, widget-based UI, strong official documentation) is arguably a smoother first mobile framework to learn.
Both frameworks are production-proven — React Native powers apps like Instagram and Discord, Flutter powers apps like Google Pay and BMW's app. Your existing skills matter more than any performance benchmark: choose React Native if you know React, choose Flutter if you're starting fresh or want maximum UI consistency across platforms.
In raw rendering benchmarks, especially for complex animations, Flutter often has an edge because it draws its own UI rather than bridging to native components. For most typical business apps, the difference is not noticeable to end users.
Yes, largely. Component structure, props, state, and hooks all work the same way. You'll need to learn React Native's specific UI components (View, Text, FlatList) instead of HTML elements, and native module concepts for device features.
Flutter renders a consistent custom UI on both platforms rather than using each platform's native components, so apps look identical everywhere. This can feel slightly less "native" to platform purists but ensures pixel-perfect design consistency across devices.