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Commonplace
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Write a note. See what you’ve already written about it.

As you type, Commonplace finds your older notes on the same idea. This is the real editor, loaded with a sample notebook — try writing about sleep, habits, reading or Seneca.

You’ve written about this before

  • Spacing beats rereading

    Review just before you'd forget. Five spaced reviews beat twenty in a row.

    2 years ago, shares reread and reviewing
  • Sleep does the filing

    Deep sleep moves the day into long-term memory.

    8 months ago, shares sleeping and morning
  • The forgetting curve

    Half of new material is gone within a day without review.

    3 years ago, shares blank
  • Tests are for learning, not grading

    Trying to recall beats looking it up again — even when you get it wrong.

    1 year ago, shares exam

Four shortcuts cover most of it

⌥SpaceJot a note from any app
⌘KSearch by meaning
[[Link to another note
⌘⇧ROpen this morning’s review

Old notes come back

Each morning, five older notes related to what you’re writing now. Keep one in rotation or send it back.

Plain files, yours

Every note is a Markdown file in a folder you pick. Works offline. No account needed.

Fast with 50,000 notes

Opens in under a second and searches everything as you type, because it all lives on your machine.

Free on one device. $5 a month to sync.

Every feature is in the free version. Sync adds your phone and other computers, end-to-end encrypted, with a year of history.

Download for MacWindows, Linux, iPhone & Android
CommonplaceA notebook that remembers what you wrote.