monthlet

Watch monthlet demo

About monthlet

monthlet is an AI note-taking app for macOS (Apple Silicon) and Windows. Dump your raw thoughts, tell it "Turn this into a note," and AI writes it, choosing banners, columns and tabs. Need changes? Just ask, and only that part updates. Spreadsheets, live charts, diagrams and a calendar view are built in. Your notes live on your disk as plain HTML files, readable by anything. The app is free, with full AI using your own API key: Claude, ChatGPT, Gemini, or any OpenAI-compatible endpoint.

Who is monthlet for?

You use AI every day, but your workflow still looks like this: ask AI, copy, paste, format, repeat. monthlet is for people who would rather describe a note than lay it out by hand, and who want to keep their notes as plain files on their own computer. With your own API key (Claude, ChatGPT, Gemini, or any OpenAI-compatible endpoint), every AI feature works today.

How does monthlet work?

1. Think: dump your raw thoughts in the chat. Bullet points, fragments, half-formed ideas. No structure needed. 2. Speak: tell monthlet what you want, like "Turn this into a note." Plain language. 3. Done: AI writes the note, choosing banners, columns and tabs. Need changes? Just ask, and only that part updates. Every note is a plain HTML file on your disk, so it opens in any browser.