harown.
Explain it

An AI app for your Mac

The AI app you shape while you use it.

Ask for a page, a habit or a shortcut, and Harown builds it right there.

Download for Mac macOS · Apple silicon

An agent harness for your Mac

Customise your own harness, while you use it.

Tools, skills, memory, automations and the interface itself: plain files your agent rewrites when you ask.

Download for Mac macOS · Apple silicon
One folder

Your work stays on your computer, in a folder you can open.

Your own AI

Use the ChatGPT or Claude plan you already pay for.

It’s your browser

Your AI browses the web with you, in the same window.

One folder

Local-first. Markdown and HTML on your disk, yours to version.

Your subscription

Runs on Claude Code, Codex or an API key. No tokens resold.

A browser it drives

Real tabs your agent clicks, types into and reads, next to yours.