Which mobile framework offers better startup performance and smoothness in 2025—Flutter or React Native?

Compares cold/warm startup times, frame rate consistency, and memory efficiency based on recent benchmarks.

• Flutter boasts a cold start around ~220 ms and warm starts near ~85 ms. It maintains up to 120 fps animation thanks to Impeller and AOT compilation, with lower memory footprint (~253 MB) and smoother transitions even on low-end devices. • React Native has improved with Bridgeless/Fabric architecture but still lags—cold start ~310 ms, average list scroll ~52 fps under load, and memory usage around ~130 MB. Tags: flutter, react-native, performance, startup-time, ui, memory