Study anything, and actually remember it.
A free study engine. Keep your notes, turn them into flashcards, and let spaced repetition work out what you should review today.
3,602 free flashcards across 139 decks — ready to study, no sign-up needed.
How you grade it decides when you see it next
Start with a subject
Notes that stay put
Write up what you're learning and keep it in one place, on any device you sign in from. Formatting, folders, and search included.
Flashcards from anything
Languages, anatomy, case law, guitar chords. Paste a list, import from Anki or Quizlet, or turn a note into a deck in one click.
Reviews timed for you
Every answer you grade retunes the schedule. Cards you find hard come back soon; ones you've mastered wait months.
Why spacing works
Reading a page again feels productive and mostly isn't. You remember far more by trying to recall something and finding out whether you were right.
- 1
Try to recall
You see the question first. The effort of reaching for the answer is what builds the memory.
- 2
Grade yourself
Say how it went. Honesty here is what makes the timing work — nobody else sees it.
- 3
Come back later
The card returns just before you'd forget it. Get it right and the gap gets longer.
Pick a deck and start
You can study anything in the library right now. An account saves your progress and lets you build your own.