Upload PDFs or slides. Get AI-powered spaced repetition flashcards and adaptive quizzes in under 60 seconds. Study smarter, not harder.
Trusted by students at
50,000+
Active Students
2.4M+
Cards Generated
89%
Avg Retention Rate
4.9★
Average Rating
The Problem
You spend hours re-reading notes and still forget 80% by exam day. It's not you — it's your method.
Pulling all-nighters before exams, re-reading the same chapters three times. You feel productive but nothing sticks past 24 hours.
📉 Retention after 1 week without review: ~10%
Ebbinghaus proved it — without active review, you forget 50% within 24 hours and 90% in a week. Notes rot in folders, never revisited.
⏱ 7 days later without review: only ~10% recall
200-slide decks, 80-page PDFs, 5 subjects. Manually creating Anki cards takes 4+ hours you don't have. So you never do it.
⚡ Average time to card a lecture manually: 4+ hours
The DeckCards Solution
Upload once. AI extracts every key concept, generates perfect flashcards, and schedules reviews so you retain everything — using the same cognitive science that top students swear by.
See How It Works →Upload → Cards in under 60 seconds
No setup. No manual work. Just learning.
Science-backed spaced repetition
SM-2 algorithm. Proven to 10× long-term recall.
Average 89% retention rate
vs. ~10% with passive re-reading.
How It Works
No configuration. No Anki setup headaches. Upload and start learning.
Drop any PDF, slide deck, Word doc, or paste text directly. Lecture recording transcripts work too.
AI reads like a tutor — finding definitions, processes, cause-and-effect relationships, and exam-likely concepts.
Sessions adapt to what you know. Hard cards return sooner. Easy ones come back when you need them. Pure efficiency.
Q: What triggers apoptosis?
⏰ Next review scheduled: Tomorrow
See retention heatmaps, weak spots, streaks, and projected exam readiness. Know exactly when you're ready.
89%
Retention
🔥 12
Day Streak
Features
Not just flashcards. A complete AI study system built for how your brain actually learns.
Identifies key terms, definitions, processes, and relationships — not just bolded words.
SM-2 spaced repetition algorithm schedules reviews at optimal intervals. Like Anki, without the setup.
Multiple choice, true/false, short answer, fill-in-the-blank. Difficulty auto-adjusts to your level.
Basic, Cloze, Image Occlusion, Type-the-Answer, and Reverse cards — all AI-generated.
Export to Anki (.apkg), Notion, Quizlet, or PDF. Your cards, your ecosystem.
Visual analytics show exactly which topics you've mastered and what needs more work.
Share decks with study groups, vote on the best cards, and review together. Learn faster, together.
Study anywhere on iOS & Android with offline mode. Swipe to review on the bus between classes.
Student Stories
Not just better flashcards — measurably better outcomes, backed by data.
"I uploaded my entire Biochemistry unit — 200 slides — and had 180 flashcards in under 2 minutes. Used DeckCards for 3 weeks before finals. Got an A- in a course I was failing. Not exaggerating."
Sarah K.
Pre-Med · Stanford University
↑89%
Retention
"From 47% to 89% recall in 3 weeks — I tracked it. The spaced repetition is genuinely different because the cards are actually good. No more creating cards manually at midnight before an exam."
James M.
Law Student · Oxford University
47→89%
In 3 weeks
"I study 3 hours less per week and my GPA went up 0.4 points in one semester. The adaptive quizzes pinpoint exactly what I don't know. It feels like having a personal tutor that never sleeps."
Aisha T.
Computer Science · MIT
+0.4 GPA
One semester
Join 50,000+ students already studying smarter
The Science
This isn't guesswork. It's Ebbinghaus, active recall, and interleaving turned into software.
Active recall + spaced repetition boosts long-term retention by up to 400% vs passive re-reading (Roediger & Butler, 2011).
Forcing your brain to retrieve information strengthens memory pathways by up to 50% per session. Every DeckCards session is pure active recall — no passive reading allowed.
Review at the exact moment you're about to forget. Our SM-2 algorithm spaces reviews optimally — no wasted repetition, no under-reviewing. Maximum learning per minute.
DeckCards mixes topics within sessions, mirroring real exam conditions. Interleaved practice boosts exam performance by 43% vs blocked studying (Taylor & Rohrer, 2010).
AI-generated cards use "why" and "how" questions — not just facts. Understanding the mechanism behind an answer is what creates durable, transferable knowledge.
| Feature | DeckCards AI | Manual Anki | Quizlet |
|---|---|---|---|
| AI card generation from PDF | ✓ | ✗ | ✗ |
| True Spaced Repetition (SM-2) | ✓ | ✓ | ✗ |
| Adaptive AI quizzes | ✓ | ✗ | Partial |
| Setup time | < 2 minutes | 4–8 hours | 1–2 hours |
| Retention heatmap analytics | ✓ | Basic stats | ✗ |
| Export to Anki (.apkg) | ✓ | N/A | ✗ |
| Collaborative group decks | ✓ | ✗ | ✓ |
| Free plan available | ✓ | ✓ | ✓ |
Pricing
Less than a coffee per week. Save 33% with annual billing.
Free Forever
No credit card required, ever.
Pro
Billed $71.88/year — save $24
No credit card · Cancel anytime
Team / Study Group
Billed $59.88/yr per seat · Min 2
🔒 14-day money-back guarantee. If you don't feel measurably smarter after two weeks, we refund you immediately. No forms, no hoops, no questions.
Upload your first PDF, get your first flashcard deck, and feel the difference in your very first session. Free, forever — no card required.