Flutter vs React Native: which to choose?

Flutter is the stronger choice when you need pixel-perfect, highly customized UI across both platforms — think complex animations, branded design systems, or apps where the visual identity must be identical on iOS and Android. Its rendering engine (Skia/Impeller) draws every pixel directly, avoiding platform UI inconsistencies. Flutter also excels when your team prefers a single codebase that compiles to native ARM code, giving near-native performance without a JavaScript bridge.

Migration is possible but requires a full rewrite of the UI layer since Flutter uses Dart and its own widget system, while React Native uses JavaScript/TypeScript with native components. Business logic can sometimes be preserved through shared backend APIs or extracted into platform-agnostic services. Most teams migrate incrementally, rebuilding one feature module at a time while the legacy React Native code continues serving production traffic.

Flutter compiles directly to native ARM machine code and renders through its own engine, eliminating the JavaScript bridge that React Native relies on for communication with native modules. This gives Flutter measurably smoother animations (consistent 60-120fps) and lower frame drop rates in complex UIs. React Native's new architecture (Fabric + TurboModules) has significantly closed this gap, but Flutter still leads in graphics-intensive scenarios like custom charts, games, and heavy scroll-based animations.

React Native has a larger ecosystem by raw numbers because it inherits the entire npm registry and JavaScript community, making it easier to find libraries for niche use cases. Flutter's pub.dev repository is smaller but growing rapidly, and its packages tend to be more consistent in quality because Dart's strict type system encourages better API design. For common needs like state management, networking, and local storage, both frameworks have mature, production-ready solutions.

Development costs are similar when starting from scratch since both frameworks target two platforms from one codebase. The key differentiator is talent availability: React Native developers are more abundant (leveraging the vast JavaScript pool), which can reduce hiring costs by 10-20%. Flutter developers command comparable salaries but are harder to find. If your existing team already knows JavaScript or TypeScript, React Native has a lower learning curve cost; if you are building a new team, Flutter's tooling and documentation make onboarding equally efficient.