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Remember Everything You Learn
Spaced repetition is the most effective study technique ever discovered. Our algorithm schedules your reviews at the perfect moment — right before you forget.
Start Learning SmarterThe Science Behind It
Discover why spaced repetition works.
In 1885, Hermann Ebbinghaus discovered the "forgetting curve" — our memory decays exponentially after learning something new. Without review, we forget 78% within 24 hours. Spaced repetition fights this by scheduling reviews at increasing intervals, strengthening neural pathways each time.
The Difference Is Clear
Without Spaced Repetition
78% forgotten in 24 hours
With Spaced Repetition
92% retention after 30 days
Smart Algorithm, Simple Process
Rate Your Recall
After seeing a card, rate how well you remembered. The algorithm adapts to your performance.
Algorithm Calculates
Our SM-2 based algorithm computes the optimal time for your next review.
Perfect Timing
Cards appear right before you'd forget them, maximizing retention with minimum effort.
Research & References
Ebbinghaus, H.
Memory: A Contribution to Experimental Psychology
1885
Pimsleur, P.
A Memory Schedule for Language Learning
1967
Leitner, S.
So lernt man lernen (Learning to Learn)
1972
Dive Deeper
Explore our in-depth articles on the science of learning and memory.
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