Encodr turns whatever you're studying into cards automatically and schedules your reviews for you. No deck to configure, no settings to tune - open it and you're already studying.
Free · works offline · imports your Anki decks
The problem
It isn't. Recognising a page you're looking at is a different task from producing the answer when the page is gone - which is the only task an exam ever sets.
That's why people walk out surprised. They did know it, in the presence of the notes.
How it works
Answer correctly and the card climbs the ladder. Miss it and it drops back down. You only study what's actually slipping.
Days between reviews. A mature 400-card deck settles into a few minutes a day, because most cards aren't due on most days.
What you get
Open the app and you're studying. No deck to build first, no session to configure - due cards are just there, mixed into a scroll you already know how to use.
Because "name the enzyme" and "put these in order" are different skills, and a single card format can't test both.
Drop in an .apkg and keep your progress moving. Or paste raw notes and let Encodr cut them into cards.
Hand a whole class out with one code. Edit someone else's deck and you get your own copy - theirs is never touched.
Everything runs on-device and syncs when you're back. Basements, planes, and campus wifi all count as offline.
Link Claude to your account and have it build decks, check your progress, and find your weak spots without leaving the chat. How to connect
Ready to study
Curated classes ship with the app, so day one isn't an empty deck. Add public decks other users have published, or join a private class with a share code.
From the blog
23 posts on memory research and how Encodr is actually built, and counting.
Re-reading feels productive because it feels easy. That feeling is the problem.
Study scienceOld, simple, and almost always explained badly. Here's the useful version.
Study scienceThe best-supported finding in learning science is also the easiest to skip.
Study scienceCramming isn't irrational - it optimises for the wrong exam.
ProductHand a chat assistant your notes and have it write cards straight into your account.
ProductThe interval ladder is simple on purpose. Here's exactly how a card climbs it.
FAQ
Encodr is a free spaced-repetition study app. You make or import flashcards, then study them in a scrollable feed. A scheduler decides which cards you see each day, based on how well you have remembered them so far.
Quizlet is easy to start but does not really schedule your reviews. Anki schedules well but is difficult to set up and unpleasant to use daily. Encodr does the scheduling properly and puts it inside a feed you will actually open - and it imports your existing Anki decks so you do not start over.
Yes. Making decks, importing decks, studying and syncing across devices are all free.
Yes. Upload an .apkg file and your cards come across. Image-occlusion cards are skipped; everything else imports.
Yes. Encodr stores your decks and progress on your device, so you can study with no connection. Changes sync automatically once you are back online.
Yes. Every deck has a share code, and you can hand out a whole class at once. If someone edits a deck you shared, they get their own copy - your original is never changed.
Encodr runs in any browser and installs to your home screen like an app. A native iOS app is on the way.
Import it, build it, or pick a curated class. Then just scroll.