Each card is a practice question: think of the answer, tap to flip, then tap Again, Hard, Good or Easy. New cards come back in minutes, then days, then weeks as you learn them.
Pick a deck. Spaced repetition: cards you know come back later, cards you miss come back sooner. Your progress stays on this phone.
Each card is a practice question: think of the answer, tap to flip, then tap Again, Hard, Good or Easy. New cards come back in minutes, then days, then weeks as you learn them.