AI flashcards · Notes · Spaced repetition

Learn anything.
Remember it with AI flashcards.

Cogni keeps your study notes in one place, turns them into smart flashcards and schedules every review with spaced repetition, so you study less and remember more.

Free to start · Web, iOS & Android
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The science

Why you forget, and how spaced repetition fixes it

Memory fades on a predictable curve. Re-reading fights it badly. Reviewing right before you forget beats it: each review makes the memory stronger and the next interval longer.

Memory strength over timeWith CogniWithout
LearnReview 1Review 2Day 1Day 2Day 5Day 14100%0%
A flashcard rated Easy, next review in 14 days, and a timeline of growing review intervals
01
You learn something

Within hours, the memory starts to fade. This is the Ebbinghaus forgetting curve, and it happens to everyone.

02
Cogni schedules the review

Right before you would forget, the card comes back. You rate it: Again, Hard, Medium or Easy.

03
Intervals grow

1 day → 3 days → 1 week → 3 weeks → 2 months. Fewer reviews, stronger memory.

AI generation

Paste a text. Drop a PDF. Get a deck.

Lecture slides, textbook chapters, your own notes. Cogni reads them and writes clear question-and-answer cards you can edit in one tap.

  • ✓PDF, text, web pages and photos of notes
  • ✓Cloze deletions, definitions, image occlusion
  • ✓Review and edit every card before you save
A PDF about cellular respiration turned into a flashcard asking what powers the cell
A biology note with a highlighted sentence and a new flashcard linked back to it
Notes

All your study notes, in one place.

Lecture notes, summaries, textbook highlights. Write and organise them in a real editor with headings, bold, highlights, lists and images. Read them to study, or select any passage and turn it into flashcards without leaving the page. Cards stay linked to the note they came from.

Progress

See your memory grow.

Daily streaks, retention per deck, cards due tomorrow and a forecast of the weeks ahead. Enough to stay motivated, not enough to distract you.

🔥 14
day streak
92%
retention
23
due tomorrow
A memory retention chart at 92 percent and a 14-day study streak
The same flashcard on the web app and on a phone, with everything in sync
Everywhere

Study on the bus. Finish on your laptop.

Web, iOS and Android stay in sync in real time. Review offline on the go and everything merges when you're back online.

Learners

Built for people with a lot to remember

MEDICAL STUDENT

“I dropped a 60-page pharmacology PDF in and had a deck before my coffee cooled. Passed the block two weeks later.”

MK
Maya Kaur
3rd year, King's College London
LANGUAGE LEARNER

“The intervals just work. I do 10 minutes on the train and my Spanish vocabulary actually sticks now.”

DR
Diego Ramírez
Learning Spanish, B1
HIGH SCHOOL

“Notes and cards in the same app means I stopped copying things twice. My history grade went from C to A.”

SL
Sofia Lind
Year 12, Stockholm
FAQ

Questions, answered.

Something else? Write to [email protected].

A review schedule that shows you each card right before you'd forget it, so intervals get longer as the memory gets stronger and you spend less time on things you already know. Spaced repetition app

Start remembering today.

Free to start. Your first deck takes about a minute.

A stack of Biology, Spanish and Physics decks ready to learn