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Turn your notes into spaced repetition flashcards with AI

Upload a PDF, slide deck, set of notes or a photo of a page and get flashcards scheduled for review. DeckOwl cards are text you read in the browser, not spoken audio.

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Text flashcards from your own material

If you came looking for a flashcard app with voice, DeckOwl works differently: its cards are text you read in the browser, not spoken audio. It turns your own PDFs, slides, notes or page photos into flashcards and schedules them with spaced repetition.

  • Upload PDFs, DOCX, PPTX, plain text notes or images.
  • Photos of pages are read with text recognition.
  • Flashcards use spaced repetition to schedule reviews.
  • Free plan includes 3 generations per month and browser study.
Example active and passive voice flashcards
What is the active voice?The subject performs the action, as in "The dog chased the ball."
What is the passive voice?The subject receives the action, as in "The ball was chased by the dog."
What verb pattern marks the passive voice?A form of be plus a past participle, as in "was written" or "has been sent."
Convert "The chef cooked the meal" to passive voice."The meal was cooked by the chef." The object becomes the subject and the verb changes to was cooked.
Why do lab reports often use passive voice?To focus on the procedure or result rather than on who performed it, as in "The samples were heated to 80 degrees."
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Cards from your material

Upload PDFs, DOCX, PPTX, text notes or photos of pages and get flashcards generated from them.

Spaced repetition

Cards return at expanding intervals so the ones you struggle with come back more often.

Study in the browser

The free plan includes browser study. Exports to PDF, DOCX, Anki and CSV are paid features.

How it works

Add your material

Upload a file or paste your notes.

Generate your cards

The AI builds flashcards with a question on the front and an answer on the back.

Review on schedule

Spaced repetition shows each card again just before you would likely forget it.

Cards are built from the material you upload, so the terms match what your course covered rather than a generic deck. Each card pairs a question on the front with its answer on the back, which keeps review focused on the content in front of you.

The free plan allows 3 generations per month with studying in the browser. Plus adds unlimited generations and exports to Anki and CSV for use in other apps.

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Frequently asked questions

How do I tell active voice from passive voice in a sentence?

Check whether the subject performs the action. If the subject receives the action and the sentence uses a form of be plus a past participle, it is passive.

Should my flashcards include both active and passive versions of a sentence?

Yes, pairing each passive sentence with its active version helps you practice converting between them. Test yourself in both directions so you recognize either form on an exam.

Does DeckOwl read flashcards aloud?

No. Cards are shown as text to study in the browser, and DeckOwl does not list spoken audio among its features.

Is exporting flashcards to Anki free?

Exports are paid features. Plus costs $99.90/year or $9.99/month and includes Anki and CSV export, and students get 40% off with a school email.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.