Overview
Google Analytics is an app measurement solution, available at no charge, that provides insight on app usage and user engagement.
FAQs
How to debug event?
DebugView enables you to see the raw event data logged by your app on development devices in near real-time. This is very useful for validation purposes during the instrumentation phase of development and can help you discover errors and mistakes in your Analytics implementation and confirm that all events and user properties are logged correctly.
https://firebase.google.com/docs/analytics/debugview