Train your Mandarin tone recall
See a character. Tap the tone. Build lasting memory with spaced repetition.
Everything you need
Science-backed tools for building lasting tone mastery.
FSRS-5 Scheduling
State-of-the-art spaced repetition optimises your review intervals automatically based on your memory.
Adaptive Cue Fading
Hints fade away as you master each character — and return if you slip up. No wasted review time.
HD Audio
Native speaker pronunciation for every character in your deck. Hear the tone, not a robot.
HSK & TOCFL
Complete HSK 1–6 and TOCFL 1–7 word lists built in. Both simplified and traditional scripts.
Recall Tests
Weekly no-hints assessments measure your true tone recall — no scaffolding, no shortcuts.
Progress & Stats
Track accuracy by tone, view session history, spot weak spots, and keep your streak alive.
Your data stays yours
No account required. No ads. All study data is stored locally on your device — we never see it.