Thanks for your interest in the game!
Regarding "passive income", this game does not get automation it like "Crank that Clicker for Playdate".
It is only about turning the crank to get income.
(I don't understand the strict definition of a clicker game, so if such a game is not a clicker game, I would be glad to know the correct genre name!)
I hope this answer will help you in your purchasing decision! :D