Performance Monitoring
Firebase Performance Monitoring helps you understand real-world performance characteristics of your React Native application, including network request latency and custom trace timing.
Installing Performance Monitoring
Automatic Network Monitoring
Once installed, Firebase Performance Monitoring automatically tracks HTTP/S network request duration and success rates without requiring any additional code.
Creating a Custom Trace
Adding Custom Metrics to a Trace
Measuring Screen Rendering Time
Viewing Performance Data
Performance data appears in the Firebase Console’s Performance dashboard, typically within a few hours, showing trends across app versions, devices, and network conditions.
Combining with Analytics
Performance Monitoring data can be cross-referenced with Analytics events, helping correlate slow performance with specific user behaviors or drop-off points in your application.
Conclusion
Firebase Performance Monitoring provides valuable, automatic visibility into real-world network and custom trace performance, complementing Crashlytics for a complete picture of production app health.

