Smart Flashcards with Spaced Repetition
Your flashcards are no longer static. The FSRS algorithm analyzes your responses and schedules each review at the optimal moment. You memorize more by reviewing less.
Regular Flashcards Are Not Enough
You've created hundreds of flashcards, but you review them all in the same order, every day. Result: you waste time on cards you already know and forget the ones that really matter.
Time Wasted
You review 100 cards when only 20 are problematic. 80% of your session is wasted on already-mastered content. Without an algorithm, it's impossible to know which cards deserve your attention.
No Adaptation
Regular flashcards treat all cards the same way. A physics formula you've mastered and a historical date you keep forgetting: same review frequency. It's absurd and inefficient.
Quick Forgetting
Without spaced repetition, you forget 80% of what you learn within 48 hours. Cramming works for tomorrow's exam, but everything is lost the following week. Your brain needs strategic intervals to anchor knowledge.
The FSRS Algorithm Schedules Your Reviews
In 3 steps, go from raw course material to smart flashcards that schedule themselves.
Import your course
PDF, photo of handwritten notes, or copy-pasted text. Revizly accepts all formats. AI analyzes and understands your content in seconds, even from notebook photos.
AI generates your flashcards
In 30 seconds, AI identifies key concepts, definitions, formulas and important dates to create flashcards optimized for memorization. Each card is designed to test your active recall.
FSRS schedules intervals
At each review, rate your response. The FSRS algorithm automatically adjusts the next interval. Easy cards space out, difficult cards come back faster. Zero planning effort.
FSRS Interval Progression
Each successful review extends the interval. If you forget, the card returns to D+1. The algorithm adapts to you, not the other way around.
Regular Flashcards vs FSRS Flashcards
The difference between blind reviewing and smart reviewing.
Regular Flashcards
- Same cards every day, in the same order
- No adaptation to your mastery level
- Time wasted on already-known cards
- Quick forgetting after the exam (short-term memory)
- No progress tracking
FSRS Flashcards (Revizly)
- Smart intervals: D+1, D+3, D+7, D+14, D+30
- Adapts to your difficulty on each card
- Focuses your effort on the cards that matter
- Permanent memorization (long-term memory)
- Detailed tracking: retention rate, mastered cards
Result: students using spaced repetition retain 2x more content with 40% less review time.
Everything You Need to Memorize Effectively
Revizly combines AI generation and FSRS spaced repetition in a single tool. No setup, no hassle.
AI Generation
Import your PDF, photo or text. AI generates optimized flashcards in 30 seconds. No more creating cards by hand: AI identifies key concepts, definitions and formulas automatically.
FSRS Algorithm
The same spaced repetition engine as Anki, natively integrated. FSRS calculates optimal intervals for each card based on your responses. 30% more effective than the older SM-2 algorithm.
Difficulty Adaptation
Each card has its own schedule. Easy cards space out to 30+ days. Difficult cards return the next day. Your effort focuses where it matters most.
Progress Tracking
Visualize your retention rate, number of mastered cards, and your progress over time. Know exactly where you stand before each exam.
Anki Export
Export your flashcards in .apkg format compatible with Anki. Generate with Revizly's AI, use in Anki if you prefer. The best of both worlds.
Multi-Format
PDF, copy-pasted text, photo of handwritten notes. Revizly accepts all formats and automatically generates flashcards, study sheets and MCQs from a single document.
Who Are These Flashcards Made For?
Spaced repetition flashcards are the gold standard for all fields that require memorizing large volumes of information.
Medical Students
Over 10,000 concepts to master for medical exams. Cramming is impossible. FSRS flashcards are the method used by top-ranked medical students worldwide. Anatomy, pharmacology, semiology: each concept is reviewed at the optimal moment.
Languages (Vocabulary)
Learning 3,000 words in a foreign language seems overwhelming. With spaced repetition, you master 20 per day effortlessly. The algorithm revisits difficult words and spaces out mastered ones. In 6 months, you have a solid vocabulary.
Law & Sciences (Definitions)
Legal articles, juridical definitions, scientific formulas, theorems: factual knowledge that requires precise recall. FSRS flashcards let you master hundreds of definitions without mixing them up.
Create Your First Flashcards
Upload your first course and discover smart flashcards with FSRS spaced repetition. No credit card, no commitment.
Get started for freeFree, no credit card required. 2 courses per month included.
Frequently Asked Questions About Spaced Repetition Flashcards
What are spaced repetition flashcards?
Spaced repetition flashcards are memory cards whose review schedule is managed by an intelligent algorithm. Instead of reviewing all cards every day, the FSRS algorithm calculates the optimal timing for each card: cards you know well are reviewed less often, while difficult ones come back more frequently. Result: you memorize 2x more while reviewing 40% less.
What's the difference between FSRS flashcards and regular flashcards?
Regular flashcards have no intelligence: you review them all in the same order, regardless of your mastery level. You waste time on known cards and don't review struggling ones enough. FSRS flashcards solve this: the algorithm analyzes your responses, measures your retention rate, and automatically adapts review intervals for each card individually.
How does the FSRS algorithm work in Revizly?
When you review a flashcard on Revizly, you rate your response (Forgot, Hard, Good, Easy). FSRS uses this rating to calculate the next review interval. An easy card might come back in 7 days, then 14, then 30. A difficult card returns the next day. The algorithm adjusts in real-time to your personal learning curve, for optimal memorization without wasted effort.
Are Revizly's FSRS flashcards compatible with Anki?
Yes, Revizly allows you to export your flashcards in .apkg format compatible with Anki. You can generate your cards with Revizly's AI and use them in Anki if you wish. However, Revizly natively integrates the same FSRS algorithm as Anki, so you don't need Anki to benefit from spaced repetition.
Can I create spaced repetition flashcards for free?
Absolutely. Revizly offers a free plan that includes creating flashcards with FSRS spaced repetition. You can create up to 2 courses per month for free, each course automatically generating flashcards, study sheets and MCQs. Spaced repetition is available on all plans, including the free one. No credit card required.