There was no tracking or ad code except error reporting to bugsnag. Most of it was the firebase SDK. Which we did work towards removing, but which was a long term project because:
- Every single database read depended on it
- Many of them were subscriptions rather than simple reads, and so couldn’t be trivially replaced by an API call.
That's a lot better than it used to be. IIRC, at the time I was working on the mentioned app the Firestore SDK was 700kb minimum just by itself, and with Auth and Firebase Realtime Database as well I believe we were over a megabyte just for firebase! For comparison, our API abstraction layer for functionality not using Firebase was under a kilobyte.
