I built Mò in one week on vacation to help me achieve conversational Chinese fluency through vocab drills. The problem: Duolingo is engaging but not effective. Anki is effective but designed in the stone age. So I built this to be quietly opinionated: fully offline, peaceful design aesthetic, all 2,199 words of HSK 1, 2, and 3, native audio, characters decoded, and the latest in spaced-repetition science. Free. No login even.