Not that it matters to the point about the App Store, but Mastermind (aka Bulls and Cows in the original pencil-and-paper version) plays significantly different

Not that it matters to the point about the App Store, but Mastermind (aka Bulls and Cows in the original pencil-and-paper version) plays significantly differently from Wordle—needing to be a word constrains both combinations and guesses severely. It’s a simple change (once someone has thought of it), but influences gameplay a lot, more even than for Threes! vs 2048, which are also surprisingly different.