Dont buy the game on steam, GB doesnt let you prove ownership and give you access to APKs, but here you get both versions. Very lame move GB. especially to those who support on patreon, should be easier to get access to the mobile version if i own it on steam.
Edit: As stated below by the devs this comment is a bit ignorant as I do not know the industry like they do. Sorry for sending the frustration your way instead of at the way the industry operates.