Flashcard maker that turns lectures into recall cards
Recall Engine is a flashcard maker that converts your lecture PDFs into active recall flashcards, one idea per card, each grounded in the source page it came from.
No credit card required
Building flashcards by hand is the slowest part of studying, and cramming five facts onto one card makes them useless. You need clean, single-idea cards fast.
How it works
Upload your lecture
Add a lecture PDF up to 50 MB, text-based or scanned.
Select your pages
Choose the pages you want cards from, or run the full lecture.
Review and recall
Get front and back cards, each linked to a source page, ready to test.
Why students use it
- One idea per card, phrased for real recall
- Each card traces back to a source page you can verify
- No more starting from a blank screen
- Free to start: 30 credits on signup, no card required
Frequently asked questions
Can I make flashcards from a PDF?
Yes. Upload a lecture PDF, select the pages, and Recall Engine generates front and back flashcards automatically. Both text-based and scanned PDFs work.
What makes a good active recall flashcard?
One idea per card, a real question on the front, and a source you can verify. Recall Engine builds cards this way and links each to its lecture page.
Do the flashcards work with spaced repetition?
Yes. Active recall flashcards are most effective when reviewed on a spaced schedule. Generate them once, then re-test the cards you miss over increasing intervals.
Is it free?
You get 30 credits free on signup with no card required, and credits are only used after a successful generation.
Can it make flashcards from handwritten or scanned lecture notes?
Yes for scanned lecture PDFs, including slides saved as images, since the maker reads the pages directly and pulls each card from what it sees. Pure handwriting can be hit or miss depending on how legible the scan is, so very messy notes may produce weaker cards. Every card still links back to the source page, so you can spot anything misread before you study it.
How is this better than just asking ChatGPT to make flashcards?
A general chatbot writes cards from memory and can quietly invent facts that were never in your lecture. This maker builds each card only from the pages you upload and ties it to the exact source page, so you are revising your own syllabus, not the model's best guess. That source link is also the fastest way to catch and bin a card that does not look right.
Can I use these flashcards for my university finals or for SBA and MCQ exams?
Yes. The cards are plain front and back recall prompts built from your own lecture content, so they fit any course or exam style, and they pair well with the SBA and MCQ practice you can generate from the same lecture. Treat them as a study aid for active recall rather than a source of clinical facts to quote, and verify anything important against the linked source page.
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Try it on your next lecture
Upload a lecture PDF and see your first output in about two minutes. Start with 30 free credits.