However, the first_open
event is a misnomer in Firebase. The event first_open
is actually tracked each time a user installs, reinstalls, or updates the app, meaning a single unique user can have multiple first_open
events. AdLibertas builds audiences with this in mind and uses the user_first_touch_timestamp
property to build retention curves and calculate new user counts. The user_first_touch_timestamp
is only set on the first first_open
event and does not change as long as the user has the app installed. A few things to note when looking at an Audience: