Cross-platform mobile frameworks now deliver genuine 60fps performance indistinguishable from native Swift or Kotlin. We evaluate Flutter and React Native across performance, ecosystem depth, and engineering economics.
- Flutter delivers unmatched pixel-perfect rendering across fragmented screens.
- React Native offers frictionless code sharing for existing React and web teams.
- Both frameworks support native hardware APIs, biometrics, and offline caching.
1. Rendering Engine Architecture
Flutter uses its own graphics engine (Impeller/Skia) to render directly to the screen pixel-for-pixel, providing identical visual consistency across Android and iOS.
React Native leverages the modern Fabric architecture and Hermes JavaScript engine, connecting directly to native OEM interface components via C++ JSI without the legacy asynchronous bridge.

