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Study smarter with a flashcard app built from your own notes

Upload PDFs, slides, notes or photos of pages. DeckOwl drafts flashcards you can edit, then schedules reviews so you see each card right before you forget it.

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 · First set needs no signup · Creates flashcards in seconds

How a flashcard study app fits into your week

Most study time gets lost re-reading slides that feel familiar but never stick. A flashcard study app fixes that by turning your own material into cards you answer from memory, then scheduling them with spaced repetition.

Flashcards drafted from your own lecture slides and readings
Spaced repetition schedules reviews so cards come back before you forget them
Quizzes with explanations to test the same material in a different format
Free plan to start with 3 generations per month and no credit card

Example probability basics flashcards

What is the probability of an event A?The number of favorable outcomes divided by the total number of equally likely outcomes, a value from 0 to 1.

What is the complement rule?P(not A) = 1 − P(A), because either the event happens or it does not.

When are two events independent?When P(A and B) = P(A) × P(B), meaning knowing B occurred does not change the probability of A.

What is the addition rule for events that can both occur?P(A or B) = P(A) + P(B) − P(A and B), which avoids counting the overlap twice.

What is conditional probability?P(A given B) = P(A and B) / P(B), provided P(B) is greater than 0.

Generate the full set

Cards from any source

Upload PDFs, DOCX, PPTX, plain text notes or photos of pages read with text recognition.

Spaced repetition

Cards return at the intervals your memory needs, so review time goes to what you are about to forget.

Quizzes and mind maps

Turn the same material into multiple choice, true/false and short answer quizzes with explanations, or a mind map.

How it works

Upload your material

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

Check the flashcards

Edit or delete any card the AI drafted before you start studying.

Study on schedule

Review each day's due cards and let spaced repetition set the next review.

DeckOwl reads PDFs, DOCX and PPTX files, plain text notes and photos of pages, then drafts flashcards you can edit before studying. Free accounts get 3 generations per month and can study in the browser.

Paid plans remove the monthly generation limit and add PDF, DOCX, Anki and CSV export, so your cards can move to the tools you already use.

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Frequently asked questions

How many flashcards should I make for a probability basics unit?

Start with one card per definition or rule, then add cards for the problems you miss on practice sets. Cards built from your own worked examples tend to be the most useful.

Should I memorize probability formulas or practice problems?

Do both. Use cards to memorize the formulas, then solve problems that use them, since probability questions test whether you can choose the right rule for a situation.

Can I export my flashcards to Anki?

Yes, on the Plus plan, which includes PDF, DOCX, Anki and CSV export. The free plan lets you study in the browser without exports.

Does DeckOwl work with photos of my notes?

Yes. Upload images of pages and the text is read with text recognition, then turned into flashcards you can review.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.