Choosing the right state management affects your app's smoothness and battery use. Simple state (like React's useState) updates fast and uses little memory, ideal for small apps. Complex libraries (Redux, MobX) add overhead but help manage big apps. Poor state choices can cause slow UI updates and lag, dropping below 60fps.
To keep 60fps, update only necessary components. Use memoization (React.memo) to avoid re-rendering unchanged parts. For Redux, use selectors to limit updates. Avoid deep nested state changes; flatten state shape. Batch state updates to reduce renders. Profile with React DevTools to spot slow updates.
Lightweight state (React hooks) adds almost no size. Libraries like Redux or MobX increase bundle size by a few hundred KB, which can slow startup slightly. Use code splitting and lazy loading to reduce initial load. Tree shaking helps remove unused code from state libraries.
State management libraries work the same on both platforms in React Native. However, Android devices vary more in memory and CPU, so heavy state libraries may impact Android performance more. iOS tends to have more consistent hardware, so performance is more predictable. Always test on real devices for both.
Neither Apple App Store nor Google Play restrict state management choices. But apps must be responsive and stable. Excessive memory use or crashes from bad state handling can cause rejection. Follow best practices for smooth UI and low battery use to pass reviews easily.
Your app takes 5 seconds to load this screen. What's likely wrong?