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Spaced repetition flashcards: ugly, free, and extremely effective

Open-source flashcards, scheduling reviews just before you would forget: the best-evidenced technique in the learning literature. It is popular with medical students because it works at enormous scale. Dated interface. The payoff comes from writing good cards and showing up daily.

Who backs it

Sorted by strength of stance

Other entries filed under focus or productivity.

  • App$$$Cheap: Roughly under $50, or under $15/month.

    Website and app blocker

    Software that makes distracting sites genuinely unavailable on a schedule

    Backed by 2 of 44 stacks: 0 do it, 2 recommend it, 0 have discussed it
  • App$$$Cheap: Roughly under $50, or under $15/month.

    Readwise

    Readwise

    Syncs your highlights and resurfaces them a few at a time

    Backed by 1 of 44 stacks: 1 do it, 0 recommend it, 0 have discussed it
  • App$$$Cheap: Roughly under $50, or under $15/month.

    The Great Courses

    The Great Courses

    Recorded lecture series on history, science and economics, on disc or by subscription

    Backed by 1 of 44 stacks: 1 do it, 0 recommend it, 0 have discussed it
  • HabitFREE, no cost

    Daily reading

    A fixed daily reading block, usually books rather than feeds

    Backed by 19 of 44 stacks: 17 do it, 2 recommend it, 0 have discussed it
  • HabitFREE, no cost

    Early rising

    A fixed, early wake time, often before anyone else is awake

    Backed by 9 of 44 stacks: 8 do it, 0 recommend it, 1 have discussed it
  • Book$$$Cheap: Roughly under $50, or under $15/month.

    Deep Work

    The case that uninterrupted concentration is a rare and valuable skill

    Backed by 5 of 44 stacks: 0 do it, 5 recommend it, 0 have discussed it

App entry · notes paraphrased from cited sources, quoted excerpts copied from the transcript they link to. Not medical advice. Not affiliated with, endorsed by, or reviewed by anyone listed. How this works.