Which mobile framework delivers better startup and runtime performance in 2025—Flutter or React Native?

Examines cold/warm startup times, animation smoothness, and memory usage based on the latest performance data.

• Flutter achieves superior performance: cold start ~220 ms, warm start ~85 ms; maintains 60fps animations even on load; optimized memory footprint using Impeller engine and AOT compilation. • React Native still lags slightly behind despite improvements like Bridgeless architecture and Fabric renderer: cold start ~310 ms, still occasional frame drops under heavy UI load. Flutter wins for raw performance and resource efficiency, especially on budget devices. Tags: flutter, react-native, performance, startup-time, memory, ui