2022 update
To counter (what appears to be the only) other review from two years ago complaining that it only pretends to be a free game: I’ve played 10 levels without hitting a paywall. The ads are suuuper annoying, but it’s less than $2 to get rid of them, so, there’s also that. Having gotten that off my chest, this is a really cute game. One of those completely pointless timewasting pleasures, I’m enjoying it a lot.