What are React Native performance profiling tools?

Question

Accepted Answer

**Built-in tools:**
- **React DevTools Profiler**: component render times
- **Performance Monitor**: live FPS counter
- **Network Inspector**: API call debugging

**Flipper:**
- Layout inspector
- Network tab
- Database viewer
- Custom plugins

**Performance metrics to track:**
- **TTI** (Time to Interactive)
- **FPS** (target: 60fps)
- **Memory usage**
- **Bridge call frequency**
- **Bundle size**

**Profiling workflow:**
```bash
# Android
adb shell am start -W com.app/.MainActivity

# iOS
instruments -t "Time Profiler"
```

**Third-party APM:**
- Sentry Performance
- DataDog RUM
- New Relic Mobile

React Native: What are React Native performance profiling tools?