Otti is a German trainer for the whole journey, A1 to C2 — and it respects your time and your data.
Over 10,000 graded words, each with an example sentence, a memory aid, and translations in English and Chinese. When single words stop being enough, there are 89 grammar lessons, 2,000+ verb tables, 90 reading passages where every word is tappable, and 300 idioms with the stories behind them. Reviews run on FSRS, the spaced-repetition algorithm modern Anki uses: hard words come back soon, words you know get out of your way. No account. No ads. No subscription. Works fully offline — on the train, in the mountains, wherever. One purchase, yours for good. Made independently, with an otter.
Otti 是一款覆盖 A1 到 C2 的德语学习应用，尊重你的时间，也尊重你的数据。
一万多个分级单词，每个都配有例句、记忆提示和英中双语释义。单词之外，还有 89 节语法课、
两千多张动词变位表、90 篇任意单词可点按查词的阅读文章，以及 300 条带出处讲解的习语。
复习采用 FSRS 间隔重复算法（新版 Anki 同款）：记不牢的词很快回来，已经会的不再打扰你。
无账号，无广告，无订阅，完全离线。一次买断，永久使用。
独立开发，附赠一只水獭。
