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Review Smarter, Not Harder
Our AI adapts review intervals to your brain — different for each subject, personalized to how you learn. Pass all 6 boundaries and lock knowledge into long-term memory.
The Leitner Box System
Cards progress through 6 boundaries at days 1, 3, 5, 8, 16, and 31. At each boundary, you're tested. Pass and move forward; fail and the card returns to the beginning.
Day 1
Every day
Day 3
Every 3 days
Day 5
Every 5 days
Day 8
Every 8 days
Day 16
Every 16 days
Day 31
Long-term memory
Fail a test? The card goes back to Day 1.
Your Brain, Your Algorithm
Our AI doesn't just follow a fixed schedule. It watches how you perform in each subject and adjusts the boundaries to match your learning speed.
Per-Subject Adaptation
The algorithm adjusts independently for each subject. Your Math intervals might differ from your German intervals.
Dynamic Boundaries
Struggling at day 5? The AI shifts that boundary to day 6 or 7 until you're ready. Getting everything right? It keeps the default.
Long-Term Memory Goal
After passing all 6 boundaries, you won't see the card for at least 15 days — and you'll still remember it. That's permanent memory.
The Science Behind Smart Review
Based on the Ebbinghaus forgetting curve, Smart Review schedules reviews right before you forget — and our AI optimizes this even further.
Your Daily Mix
Every session is perfectly balanced — the right cards at the right time.
12 / 30 cards reviewed
What is the powerhouse of the cell?
Three Pillars of Smart Review
Built on proven cognitive science and enhanced with AI.
Leitner Box System
Cards progress through 6 boundaries from Day 1 to Day 31. Each boundary is a test — pass and advance, fail and restart.
AI-Powered Adaptation
Intervals adjust based on your performance in each subject. The algorithm learns how your brain works and adapts accordingly.
Long-Term Memory
After passing all 6 boundaries, you haven't seen the card in weeks — but you still remember. That's the goal.
Smart Review vs Traditional Study
Based on Ebbinghaus (1885) & Leitner (1972)
“Without review, we forget up to 78% of what we learn within 24 hours. Spaced repetition — reviewing at increasing intervals — can push retention above 90% after 30 days.”
Read the full articleStart Reviewing Smarter Today
Join thousands of learners who retain more with less effort.
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