A 12-question quiz is generated for you in seconds. Each question has rich feedback - research shows that reading feedback after guessing is the moment of true learning. Depending on how you do on your quiz, you can do a follow up quiz that is harder or easier.
Your quizzes are saved to your account and you can re-do them later.
It's a fairly basic MVP - if you like it, I'm curious to know what else you'd want to see.
Would love feedback from the HN community!