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A flashcard app that spaces your reviews so you remember longer

Upload your PDFs, slides, notes or photos and get AI-generated flashcards that resurface at the moment you are most likely to forget them.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free · First set needs no signup · Creates flashcards in seconds

How spaced repetition fits into a study routine

Most students review a deck once, feel confident, and then lose much of it within a week. A flashcard app with spaced repetition fixes that gap by bringing each card back at increasing intervals, so you practice retrieving an answer right before it fades.

Cards reappear at growing intervals based on your recall
Flashcards are generated from PDFs, slides, notes and images
Quizzes and mind maps are available from the same material
Exports to Anki and CSV are included with the Plus plan

Example spaced repetition flashcards

What is spaced repetition?A review method that spaces out practice at increasing intervals, so each review happens just before you would forget the material.

Why does spacing reviews beat cramming?Distributed practice strengthens long-term memory, while massed cramming tends to fade quickly after the exam.

What is the forgetting curve?Ebbinghaus's description of how newly learned information drops off quickly unless it is reviewed again.

What happens to a card you get wrong in spaced repetition?It comes back sooner, and its interval is shortened so you see it again before you forget it.

How is active recall different from rereading?Active recall means pulling the answer from memory, while rereading only reexposes you to the text and can feel more familiar than it is remembered.

Generate the full set

Spaced repetition built in

Each card is scheduled based on how well you recalled it, so easy cards wait longer and hard ones come back sooner.

Made from your own material

Upload PDFs, DOCX, PPTX, plain text notes or photos of pages, and the cards are built from the content you already study.

Study in the browser

The free plan includes 3 generations per month and browser study, with no credit card needed to start.

How it works

Upload your material

Add a PDF, slide deck, set of notes or a photo of a textbook page.

Review the generated cards

Check the flashcards and keep the ones you want in your deck.

Study on the schedule

Answer each card honestly and the app spaces the next review based on your recall.

The schedule works best when you stick with short daily sessions instead of long weekend cramming. Cards you miss come back sooner, and cards you know well move further out, so your time goes to the material that needs it.

Because DeckOwl builds the cards from your own files, the deck matches what your course actually covers. You can start with the free plan in the browser and move to Plus when you want exports to other tools.

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Frequently asked questions

How often should I review flashcards with spaced repetition?

Cards you miss return within a short time, and cards you recall well are pushed further out each review. Over weeks, intervals grow from hours to days to longer gaps as recall stays reliable.

Why do spaced repetition flashcards work better than rereading notes?

Pulling an answer from memory strengthens it more than seeing it again on a page does. Spreading those retrievals over time also makes the memory last longer.

Can I export my flashcards from DeckOwl?

Exports to PDF, DOCX, Anki and CSV are part of the Plus plan, which costs $39/year or $7.99/month. The free plan lets you study your cards in the browser.

Do I need a credit card to try it?

No credit card is needed to start on the free plan, which includes 3 generations per month. Students get 40% off with a school email.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.