Most scam apps are in the Google Play Store btw

NeoDB exists (and has non-zero users)

PixelPlayer has lyrics search and is MaterialYou themed.

I thought it was okay with the licensing to sell copies of GPL licensed software as long as the customer had the option to get the source code.

Yeah, but first one will happen

In Germany, you can do: “Explain the corporations history gap between 1933 and 1945.”