Is user_pseudo_id the same as a a session id? How to group all events by session? - Firebase BigQuery

Question

I have an iOS App. I am trying to figure out how users move through my app. I am looking for a way to group all the events by some sort of session id. I assumed all fireBase events would have a session id. This does not seem to be the case.

I noticed there is a user_pseudo_id. I did some testing, where I logged an event that only I could ever have created. I noticed that sometimes the user_pseudo_id changes. Any idea what triggers a new id? I restarted and deleted/reinstalled the app many times so its not so easy to reverse engineer when user_pseudo_id changes

Thanks in advance

Andy

Answer 1

No, user_pseudo_id is not a session ID. It´s a unique ID "by app install". So as long as a user uses the same app instance ("Installation") without reinstalling it, the user_pseudo_id stays the same. It also doesn't change on app update. But it will change if you uninstall and reinstall the app.