Evidence-based Chinese learning
Learn Chinese for real, not by grinding apps
Learn Mandarin with structured vocabulary, spaced repetition, and focused tone practice. Built on five peer-reviewed pillars, Clamo adapts daily reviews to your progress.
- peer-reviewed science pillars
- 5
- adaptive scheduler parameters
- 21
- dark patterns or streak guilt
- 0
Five pillars, no folklore
Most language apps repeat 1980s scheduling algorithms and add streaks to keep you opening the app. Clamo is built the other way round: the research decides the schedule, and nothing else does.
1. FSRS Spaced Repetition
Stochastic shortest-path memory optimization
2. The 85% Optimal Difficulty Rule
The mathematical sweet spot of learning
3. High Variability Phonetic Training (HVPT)
How varied speakers help learners hear tone categories
4. Retrieval Practice & The Testing Effect
Active generation over passive recognition
5. Desirable Difficulties & Interleaving
Contextual interference for robust discrimination
How a session works
- 01
Diagnose
A short placement check finds your starting level and the tones you already confuse.
- 02
Review
Only the words you are about to forget come back, timed by a memory model trained on your own recall history.
- 03
Tune
Clamo's tone-practice audio is being expanded across several voices so learners can focus on the pitch pattern rather than a single speaker.
Founder
Fabian Hensel
Founder of Clamo · M.Sc. Computer Science student at TU Berlin
My mission
I want to make Mandarin learning more approachable and effective by turning research on memory and language acquisition into focused, practical learning tools. Clamo brings structured review, character recall and tone practice together so learners can build a steady routine and understand what each exercise is designed to teach.
Explore the learning scienceStart with the words you already know
Free to begin. No card, no countdown timer, no streak you can lose.
Start learning free