Anki specifically is a spaced repetition [0] [1] flashcards app, similar to supermemo. When you review a card, you can mark it as "Again", "Hard", "Good", or "

Anki specifically is a spaced repetition [0] [1] flashcards app, similar to supermemo. When you review a card, you can mark it as "Again", "Hard", "Good", or "Easy". The new interval of a card will depend on the grade, so it might be like 1day -> 2days / 3days / 4days, and so on. "Again" resets the interval to 0, like a new card. The documentation is "open source tier", because anki is open source. It should be better, I agree, but something something you get what you pay for. Anki is free on pc/mac and android, but not on ios. As someone who has used it for the last 2.5 years, I can wholeheartedly recommend it. In fact, I've written at length about it [2]. However I think the manual is pretty good [3] (for anyone who's curious). Feel free to ask if you have any specific questions. [0]: https://s3.amazonaws.com/andrewzah.com/studies/Pashler.Rohrer.Cepeda.Carpenter_2007.pdf https://s3.amazonaws.com/andrewzah.com/studies/Pashler.Rohre... [1]: https://s3.amazonaws.com/andrewzah.com/studies/Bahrick-et-al-1993-spacing-effect.pdf https://s3.amazonaws.com/andrewzah.com/studies/Bahrick-et-al... [2]: https://andrewzah.com/tags/anki/ https://andrewzah.com/tags/anki/ [3]: https://apps.ankiweb.net/docs/manual.html https://apps.ankiweb.net/docs/manual.html