Ah, i was using the 1.0 apk, using 1.10 from google play store has the button. :)
Edit: I guess i should mention the reason i didn't earlier check for a newer android version was that i looked at the page of the game on here above, and it said version 1.0, which was the same as the file i had, so it never occurred to me to search for it on the google play store nor even think it might have a newer version there.