Crystl: AI Agent Control

crystl for iPhone is the companion to crystl for Mac, the desktop app that runs your AI coding agents (Claude Code, Codex) in a terminal — each in its own git worktree on its own branch, so many run in parallel with no conflicts and no waiting. Keep the whole fleet working at once and get a notification the moment any agent needs an approval or has a question, then reply, approve, or answer from your pocket without heading back to your desk.

Pair to your Mac in seconds by scanning a QR code, then take the controls:

• NOTIFICATIONS: get pinged the moment an agent needs an approval, raises a question, or finishes — so you can run many agents at once and only step in when one needs you.
• APPROVALS: when an agent asks to run a tool, approve or deny it — allow once, allow always, or deny.
• QUESTIONS: answer the questions your agent raises, with its suggested options one tap away.
• SEND: type into any session, reply to your agent, and drive a TUI with a terminal key row (enter / esc / ctrl-c / arrows / tab).
• VOICE: dictate to your agent instead of typing — talk it through the next step hands-free.
• PHOTO: send an image straight from your camera or library — a screenshot, a whiteboard sketch, a design to build from.
• QUEST: chat with and steer a multi-agent party from one screen when several agents work together.
• MERGE: when an isolated agent's work is done, merge its branch back into main with one tap — no need to open your Mac...