Learn a language,
on your own machine.
Flashcards, sentence decks ordered by real-world frequency, and a pronunciation trainer with thousands of pre-rendered voice clips — running entirely offline. Mandarin and Japanese courses today, as an installable app that needs no account and no connection to work.
Everything to practice — nothing to log into.
Indie-scale and honest: it does a few things well, entirely on your device.
Flashcards
Spaced word cards with character, pinyin/kana and meaning — flip, grade, repeat.
Frequency decks
Sentence decks ordered by how common the words actually are, so you learn what you'll really use first.
Offline pronunciation
Thousands of pre-rendered voice clips mean you hear every word and sentence with no connection and no live API.
Mandarin & Japanese
Four courses today — zh↔en and ja↔en — switchable per account, with more on the way.
Tutor & translator
A built-in offline tutor and an EN→ZH translator — no live LLM calls, so it works on a plane.
Installable PWA
Add it to your home screen or dock; it runs fully offline, with a 44-theme look to make it yours.
Practice anywhere — even offline.
No account needed to start. Open it and learn.