R3CK0N
Build decks of flashcards and review them on a schedule that adapts to what you personally find hard, using FSRS, the algorithm behind modern Anki. Grade each answer Again, Hard, Good or Easy and the next interval is recalculated from your own memory curve, not a fixed schedule.
Already have Anki decks? Import a .apkg file (or Anki's plain-text export) straight into the browser, scheduling and review history included, and pick up where you left off.
Full Anki-grade statistics track true retention, time per card, review counts and more, alongside a set of built-in starter decks for mental math facts (squares, cubes, powers of two and times tables) shared with Math mode.
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