Spaced repetition that fits in a pocket.
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You build a deck, add cards, and study a short session each day. After each answer you grade yourself Again, Hard, or Easy. A spaced-repetition algorithm decides when that card comes back — cards you know drift further out, cards you miss return in minutes.
There is no password. Enter your email and we send you a numeric sign-in code; type that code into the app. You can also use Sign in with Apple or Sign in with Google.
Check your spam folder first. If the address on the confirmation screen has a typo, tap Use a different email and try again. Codes expire, so request a fresh one if it has been sitting a while.
Again means you did not know it — the card comes back later in the same session. Hard means you got it with effort. Easy means it was immediate. Each button shows exactly when the card will return, so nothing about the schedule is hidden.
Paste your notes or take a photo of a page, and the app drafts cards from it. Drafts are never added to your deck automatically — you read each one and accept it first. A wrong card you never checked is a wrong fact you would then memorise on an optimised schedule.