React Native: What are React Native's performance monitoring tools?

Built-in tools:

• React DevTools Profiler: component render times
• Performance Monitor: FPS counter
• Network Inspector: API calls

Third-party:

• Flipper: debugging platform with plugins
• Sentry: error and performance tracking
• New Relic: APM for mobile
• Datadog: observability platform

Custom monitoring:

1const startTime = performance.now();
2await heavyOperation();
3const duration = performance.now() - startTime;
4console.log(`Operation took ${duration}ms`);

Key metrics:

• Time to Interactive (TTI)
• Frame rate (target: 60fps)
• Memory usage
• Network latency