Hey Product Hunt — I'm Shin, the maker of monthlet. I built monthlet because of one small, daily annoyance: I'd ask an AI to help me write something, then spend the next ten minutes copying its answer out, pasting it somewhere, and reformatting it by hand. The thinking took seconds; the busywork took the rest. monthlet removes that loop. You dump raw thoughts — bullets, fragments, whatever — and tell it in plain language what you want ("turn this into a note"). The AI writes the whole thing: banners, columns, tabs, the layout picked for you. Want a change? Just ask, and only that part updates. The name is an anagram of HTML + NOTE, and that's the whole philosophy: every note is a plain HTML file on your own disk. It opens in any browser, forever — no lock-in, no proprietary format. You bring your own AI key (Claude, OpenAI, or Gemini), it lives in your Keychain, and with your own key your notes never touch our servers. Honest note: it's macOS on Apple Silicon (M1 or later) today. Windows is on the way. The app is free and complete. I'd genuinely love your feedback — tell me what's missing. Shinichiro Kato (@t27d.jp)

monthlet

The note app where AI writes the note — layout and all

The note app where AI writes the note — layout and all