How flashcards work

    Smarter flashcards, generated for you.

    Turn any source material into clean question/answer pairs, review them with active recall, and let an SM-2 algorithm bring them back right before you forget.

    Generate flashcards
    DOCURLTXTQA
    1

    Generate

    Upload a document, paste text, or drop in a URL. The AI extracts the key ideas and writes concise question/answer pairs — no scrolling through your source to make cards by hand.

    DOCURLTXTQA
    2

    Review

    Flip each card and answer from memory before revealing the back. Rate how it felt — Again, Hard, Good, or Easy. That single rating tells the scheduler how soon to bring the card back: 'Again' returns in minutes, 'Easy' stretches out to weeks.

    Questiontap to flipAgainHardGoodEasy
    3

    Repeat on schedule

    Cards you find easy stretch out to weeks or months. Cards you stumble on come back soon. The algorithm is a modern variant of SuperMemo's SM-2, which has powered spaced-repetition apps for over thirty years.

    RETENTIONTIME →reviewreview

    The science

    Why flashcards beat re-reading.

    Active recall2

    Generating an answer from memory builds far stronger retrieval pathways than passively re-reading notes. Flashcards force recall every single rep.

    Testing effect2

    Decades of studies show that being tested on material — even without feedback — produces better long-term retention than spending the same time studying it.

    Spaced repetition (SM-2)3,5

    Expanding review intervals compound across weeks and months. The SM-2 algorithm tunes intervals per card so you spend time only on what's about to slip.

    References

    1. [1]Ebbinghaus, H. (1885). Über das Gedächtnis: Untersuchungen zur experimentellen Psychologie. Translated as Memory: A Contribution to Experimental Psychology. Link
    2. [2]Roediger, H. L., & Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249–255. Link
    3. [3]Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks: A review and quantitative synthesis. Psychological Bulletin, 132(3), 354–380. Link
    4. [5]Wozniak, P. A. (1990). Algorithm SM-2 used in the SuperMemo method for computer-assisted self-tuition of declarative knowledge. Link

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