I use "alarm clock xtreme" on Android that is similar; it has math and "type these random characters" puzzle as well as snooze detection so you hit "I'm awake"

I use "alarm clock xtreme" on Android that is similar; it has math and "type these random characters" puzzle as well as snooze detection so you hit "I'm awake" but also includes snoozing/stopping via number of steps detected or by scanning a barcode etc. Definitely recommend it. But even so, I wish it would force me to key in the current time to disable, that way my sleepy brain would better understand "it's time to wake up now, because it is x time".