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Use a flashcard app built from your own class notes

Upload a PDF, slides, a DOCX, plain notes or a photo of a page. DeckOwl turns it into flashcards you review with spaced repetition, right in your browser.

Create flashcards nowFree · No credit card required

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

Free account · 3 sets a month · Creates flashcards in seconds

Why a flashcard app works better with your own material

Most people who download a phone study app end up typing every card by hand, and that is where study plans stall. DeckOwl takes a different route: it works as a flashcard app that reads the exact material you already have and turns it into cards you can review.

Upload PDFs, slides, DOCX files, plain notes or photos of pages.
Review flashcards with spaced repetition in the browser.
Test yourself with multiple choice, true or false, and short answer quizzes.
Export to Anki or CSV on the Plus plan.

Example biology flashcards (sample topic)

What is the function of ribosomes?They translate messenger RNA into a chain of amino acids to build proteins.

What is the net charge of a neutral atom?Zero, because the number of protons equals the number of electrons.

What is the final electron acceptor in aerobic respiration?Oxygen, which combines with electrons and protons to form water.

How do the outcomes of mitosis and meiosis differ?Mitosis yields two identical diploid cells; meiosis yields four haploid cells with varied genetics.

What organelle produces most of a eukaryotic cell's ATP?The mitochondrion, through cellular respiration.

Generate the full set

Built from your material

Flashcards come from the PDFs, slides, documents, notes or page photos you upload, not from a generic deck.

Spaced repetition

Cards return at the intervals where you are most likely to forget them, so short daily sessions do the work.

Study in the browser

Review on the phone or laptop you already have. The free plan includes browser study with no download required.

How it works

Upload your notes

Add a PDF, DOCX, PPTX, plain text file or an image. Photos of pages are read with text recognition.

Generate your flashcards

DeckOwl builds a flashcard set from the content, which you can review and edit before studying.

Study on a schedule

Spaced repetition brings each card back at the right time, so you spend less effort on what you already know.

Spaced repetition matters because reviews are timed to when you are about to forget, so a short daily session beats a long cram. Photos of printed pages are read with text recognition, so nothing has to be retyped.

The free plan includes 3 generations per month and browser study. Plus adds unlimited generations, PDF, DOCX, Anki and CSV export, and spaced repetition for every deck.

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Frequently asked questions

How many flashcards should I make for a biology unit?

Start with the key terms and concepts from one lecture, roughly 20 to 40 cards, then add more as the material gets harder.

How does spaced repetition help with memorizing terms?

It schedules each card to come back shortly before you would likely forget it, so easy cards appear less often and hard ones more often.

Can I export my flashcards on the free plan?

No. The free plan includes 3 generations per month and browser study, while PDF, DOCX, Anki and CSV exports are part of Plus.

Is there a student discount?

Yes, students get 40% off with a school email, and you can start without a credit card.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.