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Turn any set of rules into flashcards with AI

Upload a PDF, slides, notes, or a photo of a page. DeckOwl pulls out the rules and builds flashcards you can review with spaced repetition.

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How to build rules flashcards that stick

Good rules flashcards state one rule on the front and the rule itself on the back, with the condition in plain words. Rules are easy to read and hard to recall, so the cards need to ask you to produce the rule, not recognize it.

  • Keep each card to one rule so a miss tells you exactly what to review.
  • Write the exception as its own card, with an example that shows when it applies.
  • Test yourself by saying the rule aloud before you flip the card.
  • Review the cards you miss more often than the ones you already know.
Example grammar and chess rules flashcards
When do you add -es to form a plural noun?After s, x, z, ch, sh, or sometimes o, as in buses, boxes, and potatoes.
Where does the comma go after an introductory clause?Before the main clause, as in 'When the bell rang, we left.'
How does a knight move in chess?In an L shape: two squares in one direction and one square to the side. It is the only piece that can jump over others.
What is en passant in chess?A pawn captures an enemy pawn that has just moved two squares past it, and the capture must be made on the very next move.
What is the i before e rule?Write i before e, except after c, as in believe and receive, though words like weigh and neighbor are exceptions.
Generate the full set

One rule per card

The generator splits dense rule sections into short cards, so each card tests a single rule you can recall on its own.

Exceptions included

Rules with exceptions get their own cards, so you practice the rule and its exception separately.

Spaced repetition

Cards you miss come back sooner, and cards you know fade into longer gaps between reviews.

How it works

Add your material

Upload a PDF, DOCX, PPTX, plain text notes, or a photo of a textbook page.

Generate flashcards

DeckOwl reads the text, identifies the rules, and writes question-and-answer cards from them.

Study what you missed

Review in the browser with spaced repetition, and export to Anki or CSV on Plus.

Start with the rules your course or game actually tests, then add the exceptions as separate cards. Review the cards in short sessions over several days, since spacing out repetition works better than one long cram before a test.

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Frequently asked questions

How many rules should one flashcard cover?

One rule per card works best because a single rule is easier to recall and easier to check when you get it wrong. Combine rules only when they are always used together.

How do I remember rules that have exceptions?

Make a separate card for each exception and include a short example of when the exception applies. Review the main rule and its exception in the same session so you see how they connect.

Can I export my rules flashcards?

Yes, but exports are a paid feature: Plus ($39/year or $7.99/month) includes PDF, DOCX, Anki, and CSV export. The free plan lets you study in the browser with 3 generations per month.

Is there a free plan, and do I need a credit card?

Yes, the free plan includes 3 generations per month and browser study, and no credit card is needed to start. Students with a school email get 40% off Plus.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.