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.
Related
Try it on your next lecture
Upload a lecture PDF and see your first output in about two minutes. Start with 30 free credits.