See the tones.
Learn the words.
A private, offline flashcard app for learning Chinese — with tone-colored pinyin, all of HSK 1–9, and spaced repetition that knows the moment you're about to forget a word.
Every character wears its tones.
Pinyin is colored by tone — 1st red, 2nd green, 3rd blue, 4th purple — and a soft wash of the same color glows behind the character. The shape and its sound land together, so tones stop being an afterthought.
Open it, and start.
The whole standard is already inside — no downloads, no sign-up, nothing to buy.
Review right before you forget.
An FSRS-6 scheduler tracks each word and surfaces it at the moment it's about to slip — so you spend your minutes on what's actually fading, not what you already know.
Recognize, tone-drill, or speak.
Flip flashcards, drill the tones, or say the word aloud and let the app grade your pronunciation on-device. Race the clock, or train real-world numbers, dates, money, and time.
Pinyin over anything.
Paste any Chinese text — or snap a photo of a sign or menu — and get tone-colored pinyin above every character, tones and all. Tap a word to save it and drill it that night.
Your own notebooks.
Build notebooks from the words you meet and break each character into its radicals — see how 好 is 女 + 子, and learn the pieces that unlock hundreds more.
Your devices — and your class — in sync.
The things other Chinese apps put behind a subscription are simply here: sync across your devices, and notebooks a teacher can publish to a whole class. No account, nothing to buy.
iPhone and iPad, always in step.
Link your devices with a quick scan and your words, notebooks, and progress stay in sync — end-to-end encrypted, so the relay only ever sees ciphertext. No account, no fee.
Publish once. Students subscribe.
A teacher publishes a notebook and shares a link; students subscribe and get every update live, while their own progress stays private on their device. Free for the whole class.
Private by design.
No account. No ads. No tracking, ever. Your words and progress live on your device, and the optional cross-device sync is end-to-end encrypted — the relay only ever sees ciphertext, never your content. The whole app is free: no subscription, no in-app purchases.