What app developers find most valuable is what other apps you use and what competitors apps you have so they can target you more effectively. If you have Peloton or Tonal, they want to know if you have the Strava app on your phone for example.
Only on older versions of Android. Apps are very locked down on what you can get. I would have loved to be able to fingerprint a device when i was at the challenger bank and application list is very good for fingerprinting.. We would fingerprint on the web to detect bots.
