I read that, but it doesn’t answer my questions. The page says that only certain features require a developer account, but I’m using publicly available data that doesn’t require a user to log in. I don’t know what the restrictions are in this case.
I don’t really see anything about application monetization on this page. I assume since it’s not explicitly prohibited, it’s safe so long as I follow the ToS, but I want to be 100% sure before I do so.