Spaced repetition · Ebbinghaus
Turn your lessons into long-term memory. Adaptive flashcards and a review schedule timed to the moments you're about to forget — in a private app that works offline.
The method
Over a century ago, Hermann Ebbinghaus measured how fast we forget. The answer: fast — unless you review at the right moments.
After you learn something, your memory of it drops off steeply within a day or two. That's the forgetting curve. Cram once and most of it is gone by the weekend.
But each time you recall it just before you'd forget, the curve resets — and it falls more slowly next time. Space those reviews out at growing intervals (+1, +7, +14, +21 days) and the knowledge moves into long-term memory for good.
The hard part was always knowing when to review. This tracker does that for you — and goes further: every flashcard adapts to how well you know it, coming back sooner when you're shaky and stretching out (1 → 3 → 8 → 21 days) once it sticks.
Why you'll like it
Log a lesson and it comes back at +1/+7/+14/+21 days — right before you'd forget.
Grade each card Again/Hard/Good/Easy and it decides when you'll see it next.
Full-screen, keyboard-driven review with audio pronunciation. Fast and calm.
Everything stays on your device. No account, no tracking, nothing sent anywhere.
Watch cards get mastered over time and track accuracy per deck.
Build your own categories and cards — or bulk-import a word list in seconds.
Simple to use
Log a lesson the day you finish it, and add flashcards for the words you want to keep.
Hit Study now and grade each card. It flips with Space, you rate 1–4.
A few minutes a day is enough — the app schedules every review for you.
Get it
Same tracker, three ways to run it — pick what fits how you study. Not sure? Try the live demo first →
One self-contained file you open on your Mac or PC. Fully offline, private, and yours to keep.
Get the Desktop edition →Install it on your phone's home screen — full-screen, launches instantly, works offline.
Get the Mobile edition →Prefer to live in Notion? Track your reviews and decks right inside your workspace.
Get the Notion edition →The full app runs right in your browser — no download, no sign-up.