Money codes are indeed Patron exclusive, but you don't need them.
Buy and upgrade the Bar at your convenience, it will pay for anything and everything you need.
There used to be an apk before v0.12. Sadly, it has a limit of 2gB, and the game is currently 10gB, already at a 90% compression rate, the most that can be done without notable quality loss.
Fan ultra compressions exist, with the expected quality loss.
I hear Runey is going to do official ultra compressions himself for future updates, since the few extra steps involved in JoiPlay are complained about so often.