Download Osmo for Mac
Osmo runs on macOS 14 and later, on Apple Silicon. It installs outside the Mac App Store — that’s what lets it read your conversations locally and stay private.
Download Osmo (.zip)Installing
Osmo is signed and notarized by Apple, so it opens like any other Mac app — no security warnings. Just unzip, drag Osmo to your Applications folder, and double-click.
Or install in one line
Prefer the terminal? This downloads Osmo and installs it to your Applications folder:
curl -fsSL https://leftonread.in/install.sh | bash
Once you open Osmo, it walks you through a summon shortcut and one Accessibility permission, with a plain reason for each.