Study with spaced repetition (SM-2). Flip each card, rate how well you recalled it, and the scheduler brings it back at the right time to move it into long-term memory. Your progress is saved privately in your browser - no account needed.
Cards are generated from the same open-source question bank as the quiz (data/quiz-questions.json). Rating a card Again, Hard, Good, or Easy adjusts when you'll see it next using the SM-2 algorithm. Add or improve cards by contributing questions via a pull request.