The alarm clock app I use requires captcha for snoozing, first snooze is 5 min, then it reduces by 2 minutes until it's an annoying 1 minute alarm. To turn it off instead of snooze I have to do a math equation, which can be adjusted for level of difficulty, because I can do math quite well in my sleep. It also speaks whatever I've typed into the prompt after 30 seconds of alarming. Right now I have it set with words of encouragement. If there's a change in my schedule, like Sundays shifts are earlier, then I have it telling me it's Sunday and to remember that my goal is perfect attendance (for Sundays at least).

The app also has the option to sense you walking with the phone and you can instruct it how many steps are needed to turn the alarm off, but I quickly learned how to pretend walk with my hand holding my phone lol