State-of-the-art spaced repetition algorithm that adapts to your memory patterns
Optimized review intervals that maximize retention while minimizing study time
Detailed analytics and streak tracking to keep you motivated and on track
Lightning-fast review sessions with intuitive keyboard controls
When you first learn something, you review it after short intervals (10 minutes, then 1 day). This helps move information from short-term to long-term memory.
As you successfully recall information, the intervals between reviews get longer (2 days, 5 days, 2 weeks, 1 month, etc.). This strengthens memory consolidation.
The FSRS algorithm tracks how difficult each card is for you personally. Harder cards appear more frequently, while easy ones are scheduled less often.
By reviewing just before you would forget, you achieve 90%+ retention rates while spending minimal time studying. The algorithm continuously optimizes for your memory.