Ok, so if I need a database for my app I need my own server to keep the app running in Playstore after cancel payment? This is an important question, because it sounds like I have to pay 50$ a month just because I need your server. I have no problem to pay that price for building an app with your platform - that is totally ok - but for a database is a lot.
Cheers
Tobias
Here your college is telling different