Happy (Happy Coder)
Open-source client https://happy.engineering/mobile-app/
- Supported agents
- Claude Code, Codex, Grok
- Where the agent runs
- your computer, a server you rent
- iOS
- yes
- Android
- yes
- Push notifications
- yes
- Diff review
- yes (reads files and the session's Git changes)
- Price
- Free
- Open source
- yes (MIT)
- Laptop must stay on?
- yes, the machine running the agent must be on
Notes
Pair once via QR code. End-to-end encrypted sync; relay sees ciphertext only (per vendor). Works with Happy Desktop or the original `happy` npm CLI (`happy claude` / `happy codex`).
Sources
Last checked: 2026-10-16. Something out of date? Send a correction.