The flashcard generator that
does the hard part for you
Making good flashcards is slow. ClassFactor turns any lecture, PDF, video, or note into a clean, accurate deck in seconds — then schedules it so it sticks. You bring the material; it does the typing.
- Auto-generated from your own material
- Term, Q&A, and cloze-deletion cards
- Cited back to the exact page or timestamp
- Scheduled with FSRS from day one
Free to start · no credit card required
Front
What drives the plateau phase of a cardiac action potential?
Back
Calcium (Ca²⁺) influx through slow voltage-gated channels balances K⁺ efflux, holding the membrane depolarized.
Any source
If you can study it, you can turn it into flashcards
Point ClassFactor at whatever you’re learning from — it reads, transcribes, and turns it into a deck.
How it works
From upload to first review in under a minute
Drop in your material
Upload a file, paste your notes, or drop a YouTube link. ClassFactor reads it, transcribes any audio or video, and maps out the key concepts.
Get a finished deck in seconds
It writes clean, accurate flashcards — each front-and-back grounded in your source. A judge model quietly drops weak or duplicate cards before you ever see them.
Review on autopilot
Every deck is scheduled with FSRS spaced repetition from day one, so the right cards come back at the right time and actually stick.
Card types
Not just term-and-definition
ClassFactor picks the right kind of card for the material — and you can mix them freely in a single deck.
Term → definition
Classic two-sided cards for vocabulary, drugs, structures, dates, and definitions you need cold.
Question & answer
Recall-style cards that ask a real question and reward you for retrieving the answer, not just recognizing it.
Cloze deletion
Fill-in-the-blank cards that hide the key term inside a sentence — perfect for processes, pathways, and definitions in context.
Front
What drives the plateau phase of a cardiac action potential?
Back
Calcium (Ca²⁺) influx through slow voltage-gated channels balances K⁺ efflux, holding the membrane depolarized.
Quality you can trust
Flashcards that match your course, not a generic textbook
Grounded in your source
Every card is built from your material, not the open internet — so it matches your course, not a generic textbook.
Cited back to the page
Cards link to the exact page or timestamp they came from, so you can jump back to the source in one tap.
Yours to refine
Edit any card inline, or thumbs-down one and ClassFactor instantly regenerates a better version.
Who it’s for
Built for the way you actually study
Med & board students
Turn dense lectures and first-aid notes into board-ready decks for USMLE, MCAT, and NCLEX.
College & high school
Convert slides and textbook chapters into decks for the next midterm without hours of typing.
Language learners
Generate vocabulary and phrase cards in 35+ languages, straight from the material you’re studying.
FAQ
AI flashcard generator, answered
Upload a PDF, slide deck, document, image, audio, video, or YouTube link — or just paste your notes. ClassFactor extracts the text (transcribing audio and video automatically), identifies the key concepts, and writes accurate front-and-back flashcards grounded in your material. A judge model filters out weak or duplicate cards, and every deck is scheduled with FSRS spaced repetition so you actually remember it.
PDFs, PowerPoint and Google Slides, Word and Google Docs, web pages, YouTube videos, audio and video lectures, images, and plain notes you paste or record — plus existing Anki .apkg decks. If you can study it, you can usually turn it into a deck.
They’re grounded in your own source and cite the exact page or timestamp, which keeps them faithful to your material. A judge model drops vague, duplicate, or trivial cards before they reach you, and you can edit any card or thumbs-down one to instantly regenerate a better version. As with any AI, we recommend a quick review for high-stakes topics.
Term–definition cards, question-and-answer cards, and cloze-deletion (fill-in-the-blank) cards. You can mix types within a deck, and image-occlusion cards are available for diagrams and anatomy.
Yes. The Free plan includes the flashcard generator, every card type, and FSRS spaced repetition, with a daily generation limit. Pro and Medical raise the limits and add exams, the voice tutor, and higher-quality models — with a 7-day free trial.
Yes — your decks sync across web, iOS, and Android, so you can generate on your laptop and review on your phone between classes.
Explore more
Works better with the rest of ClassFactor
Turn today’s lecture into tomorrow’s recall.
Generate your first flashcard deck free — no credit card, ready in seconds.