Master Languages with Scientifically-Proven Spaced Repetition
Transform new vocabulary into permanent memory with our adaptive learning algorithm that shows you exactly what to review, exactly when you need it.
✓ Join thousands mastering languages efficiently
Why Traditional Language Learning Fails
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Endless Repetition
Cramming the same words over and over, wasting hours on vocabulary you already know while neglecting the ones slipping away.
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Forgetting Curve
You learn 50 new words today, but forget 80% within a week. Traditional methods fight against how your brain naturally works.
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Poor Timing
Reviewing too early wastes time. Reviewing too late means starting over. Most apps guess when you should review.
Nincha’s Smart Spaced Repetition System
Our algorithm doesn’t guess—it learns how your brain works and adapts to your unique learning patterns.
Adaptive Scheduling
Master a word easily? We’ll show it again in 2 weeks.
Struggling with pronunciation? See it tomorrow.
The system tracks your individual progress with each word and adjusts accordingly.
bonheur
happiness
Next review: 2 weeks
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Next: 3 days → 1 week
Your Answers Shapes Learning
Give answer and get immediately rated for your review as “Easy,” “Good,” or “Hard.”
The algorithm immediately adjusts future scheduling. Easy words disappear for weeks, while challenging ones return soon with extra practice.
Four-Stage Memory Building
Each stage has different timing rules optimized for that phase of memory formation.
Words progress from
Built on Memory Science
126%
more retention with spaced repetition vs. traditional study
50%
less time needed to achieve the same learning outcomes
The Forgetting Curve vs. Spaced Repetition
German psychologist Hermann Ebbinghaus discovered that we forget 50% of new information within an hour.
Spaced repetition fights this curve by reviewing at the exact moment you’re about to forget.
See It In Action
Follow the journey of learning one word through our spaced repetition system
belleza
beauty
Meet
“belleza”
Learn the word, pronunciation, and meaning.
→ Next review: 1 day
First time
Review
You remember it easily!
Good!
→ Next review: 4 days
Optimized
Spacing
Still remember the word?
Meowsome!
→ Next review: 10 days
Long-term
Memory
“belleza” is now mastered.
Excellent!
→ Next review: 10 days
The Result?
You’ve permanently learned “belleza” with just 4 reviews over 16 days. Traditional cramming would require dozens of repetitions and still risk forgetting.
Why Nincha Learners Succeed
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Study Less, Remember More
Spend 15 minutes daily instead of hours. Our algorithm ensures maximum retention with minimum time investment.
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Personalized Learning
The system adapts to your pace, difficulty preferences, and learning style. No two students see the same schedule.
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Track Real Progress
See exactly which words are in each memory stage. Watch your vocabulary grow from hundreds to thousands.
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Build Learning Confidence
Success breeds success. Watch your language skills compound as the algorithm keeps you in the optimal challenge zone.
What Our Users Say About Spaced Repetition
“The spaced repetition system is a game-changer. I’m remembering vocabulary weeks later without constantly reviewing it. It’s like magic!”
– Sarah M.
“I used to spend hours reviewing the same words. Now the app shows me exactly what I need to study and when. My vocabulary has exploded!”
– Marcus L.
“The timing is perfect. Words appear just when I’m about to forget them. My retention rate has doubled since using Nincha’s system.”
– Jennifer K.
Ready to Transform Your Language Learning?
Join thousands of students who’ve discovered the power of scientifically-optimized spaced repetition. Start building your vocabulary the smart way.
✓ Free to start • ✓ No credit card required • ✓ Join 500,000+ learners