Learn smarter with spaced repetition
Quantilo uses the science of memory to help you remember anything. Here's how the magic works.
Three steps to mastery
A simple workflow that produces extraordinary results.
Create or Import Your Cards
Start by creating flashcards with our rich block editor, or import existing content from Notion or CSV files. Organize cards into decks and topics.
- Rich block-based card editor
- Import from Notion with one click
- CSV import for bulk uploads
- Organize with decks and topics
Step illustration coming soon
Study with Spaced Repetition
When you review a card, rate how well you remembered it. Our SM-2 algorithm calculates the optimal time to show it again—right before you'd forget.
- Rate your recall: Again, Hard, Good, Easy
- Algorithm adapts to your performance
- Cards you struggle with appear more often
- Easy cards wait longer between reviews
Step illustration coming soon
Build Long-Term Memory
Over time, review intervals grow from days to weeks to months. Each successful review strengthens the memory, making it permanent.
- Intervals grow exponentially with success
- Track your progress and streaks
- AI assistant helps when you're stuck
- Study across all your devices
Step illustration coming soon
Why spaced repetition works
Backed by over a century of cognitive science research.
The Forgetting Curve
Without review, we forget ~70% of new information within 24 hours. Spaced repetition targets reviews at the optimal moment to interrupt forgetting.
The Spacing Effect
Information reviewed at increasing intervals is retained far better than information crammed in one session. This is backed by 100+ years of research.
Active Recall
Actively retrieving information strengthens memory more than passive review. Flashcards force active recall, making learning stick.
SM-2: The algorithm behind Quantilo
Quantilo uses the SM-2 algorithm, developed by Piotr Wozniak in the 1980s and refined over decades. It's the same algorithm that powers popular apps like Anki.
Here's how it works in simple terms:
- Each card has an interval (days until next review) and an ease factor (difficulty multiplier).
- When you review, you rate your recall: Again (forgot), Hard, Good, or Easy.
- Based on your rating, the algorithm adjusts the interval and ease factor for that card.
- Cards you find easy grow to intervals of months or years. Cards you struggle with stay frequent.
The result? You spend minimal time on what you know well and focus your energy on what needs work.
How methods compare
Not all study methods are created equal.
| Method | Long-term Retention | Time Required |
|---|---|---|
| Traditional studying | 20% | High |
| Re-reading notes | 30% | Medium |
| Spaced repetition | 90%+ | Low |
Experience it yourself
The best way to understand spaced repetition is to try it. Start free and feel the difference.