What it does
Corrects your writing
Shows what changed and why — grammar, word choice, tone and more. Write in Korean and it suggests natural English, plus two alternatives in a different tone.
Reviews at the right time
Words and mistakes become review cards. The ones you’re most likely to forget come up first, about 20 a day.
Keeps a mistake notebook
Every correction is saved by type, so you can see which mistakes you keep making.
Builds your vocabulary
Useful expressions from your corrections are added automatically, and it suggests new words based on your mistakes.
How to run it
There’s no online demo, because the AI model runs on your own computer. The source code isn’t public yet; once it is, you’ll need Node.js and Ollama installed and running, then:
ollama pull gemma4:12b
npm install
npm run dev