@charlag
Not sure if you've heard of it but on Android there's F-Droid, which is an app store for free software:
The catch is that people have to check the "Allow software from third parties" box in the preferences, which all the fearmongering security "experts" say not to do. But it's there and it has some good apps.
@ND3JR yeah, I know about it and Tusky is there