How Spaced Repetition Works
The Problem with Cramming
Research shows that cramming (studying everything at once) leads to poor long-term retention. You might pass tomorrow's test, but you'll forget most of it within a week.
The Solution: Spaced Repetition
Spaced repetition shows you cards at increasing intervals based on how well you know them. Cards you struggle with appear more often; cards you know well appear less frequently.
FSRS: The Algorithm Behind FluentFlash
FluentFlash uses FSRS (Free Spaced Repetition Scheduler) — the most advanced spaced repetition algorithm available. It was developed through open-source research and outperforms older algorithms like SM-2 (used by traditional Anki) by 20-30%.
How FSRS Works
After each review, FSRS calculates:
What Your Ratings Mean
Target Retention
FluentFlash targets 90% retention — meaning you should correctly remember 9 out of 10 cards when they come up for review. This is the optimal balance between review efficiency and long-term memory.