I’d like to know how Signal doesn’t need “trackers” in the Google app store to work, but Kontalk needs it (not in f-droid). I was answered by email about this:
As for the trackers, those are in the Google Play version in order to use push notifications and crash reports (you can opt-out of both if you’d like, but push notifications are a big battery saver and message content is not shared with Google, it’s just a signal for the app like “hey, there are new messages, go connect and dowload them!”).
Another difference is map providers: the F-Droid version has only
OpenStreetMap, the Google Play version has both OSM and Google Maps."
Yes, I use the F-droid version and also my wife, but if I want some friends out there (using the Google App store) to use it, they won’t follow my steps to download it from F-droid (you know…). I’d be more happy if Kontalk avoids all those “trackers” because other apps (like Signal) don’t need it to work.