To start collecting basic app-usage data, add the Google Analytics for Firebase (GA4F) SDK to your app (iOS or Android).
utm_source
and utm_medium
in the referrer.With the SDK in place, a number of events are collected automatically. You also have the option to collect any recommended events that are relevant to your business. Use the logEvent method to define and collect up to 500 different events, with no limit on total volume.