Horizon works on plain folders of Markdown files you own. Keep a private space on your Mac and a team space on a shared Google Drive folder, chat with Claude Code and Codex inside the app, and open it all from your iPad or iPhone.
Switch between folders on your Mac and Google Drive folders shared with your team.
Projects, deals, people and objectives, stored as Markdown any editor can read.
Claude Code and Codex on your own subscriptions, with per-chat access levels.
No servers, no tracking. Your data stays on your devices and in folders you choose.
When you connect a Google Drive folder as a space, Horizon uses Google's permission only to list your folders and keep the folder you picked in sync with your Mac. Read the privacy policy.