Firebase Performance Monitoring for iOS, Android and Web apps.
Firebase Performance Monitoring helps you to gain insight into the performance characteristics of your iOS, Android and Web apps. You use the Performance Monitoring SDK to collect performance data from your app, and then review and analyze that data in the Firebase console. Performance Monitoring helps you to understand where and when the performance of your app can be improved so that you can use that information to fix performance issues.
See the Firebase Performance Monitoring documentation for more details.