Performance can make or break a mobile app. Users uninstall slow apps within seconds — especially on older Android devices. The good news? React Native can be extremely fast if you apply the right techniques.
After years of building real-world RN apps, here are the 10 React Native performance secrets every developer should use in 2025.
1. Use useCallback and useMemo (But Smartly)
React re-renders more often than you expect. These hooks help you avoid expensive re-renders.
Why it matters
Prevents functions from recreating on every render
Keeps components lightweight
Reduces wasted renders
Pro tip
Only memoize heavy work. Overusing them can hurt performance.
2. Memo Your Components (React.memo)
If a component re-renders without changing props, that’s wasted work.
