Mobile / remote · Slopus (App Store seller: Bulka, LLC)
Happy
Open-source app that runs Claude, Codex and Grok sessions on your own machine and continues them from an iOS, Android or web client, with an end-to-end encrypted link and shared multi-user sessions.
~/facts
- platforms
- iOSAndroidWebmacOSWindowsLinuxMobile app (iOS, Android, web) lives in slopus/happy; desktop app for macOS (Apple Silicon and Intel), Windows and Linux is in slopus/happy-desktop. iOS 15.1+. Web build at app.happy.engineering is a JS-only page, not rendered here; 'web' comes from the repo README.
- price
- FreeWebsite and README say 'Free and open source'; you sign in with your own Claude/Codex/Grok subscriptions. The US App Store listing nevertheless shows one in-app purchase, 'Plus Plus Monthly $19.99' (seen 2026-10-20); the website does not explain it.
- source
- Open sourceLicence: MIT
- github
- slopus/happy 24.2k stars, seen 2026-10-20
~/features
- ? not verified SSH
- ? not verified SFTP
- ? not verified Mosh
- ? not verified Port forwarding
- ? not verified Jump host
- ? not verified Cloud sync
- ✓ yes AI agents
- ✓ yes Phone control
✓ documented · – absent or not in its feature list · ? not verified
+ strengths
- MIT-licensed with a large public repo (about 24k stars) and a separate open-source desktop app for macOS, Windows and Linux
- Covers iOS, Android, web and desktop from one codebase family
- Reuses existing Claude, Codex and Grok subscriptions instead of billing separately
- Sessions can be shared with another person who can watch and steer the same agent
! weak points
- Not an SSH client: sessions go through the Happy CLI plus a relay server, so no SSH/SFTP/port-forwarding features are documented
- Website copy names the vendors inconsistently ('Astra, Fable, and Grok' in the README) which makes the supported-agent list unclear
- App Store lists a $19.99 monthly in-app purchase that the 'free' marketing does not explain
- Requires installing the Happy CLI/daemon on the computer that runs the agent
~/who it is for
- best for
- Developers who already pay for Claude/Codex and want an open-source phone and desktop front end for those agent sessions.
- look elsewhere if
- People who need a general-purpose SSH/SFTP client for arbitrary servers.
~/sources
Checked 2026-10-20. Prices and features change; the vendor's page is the authority.
- happy.engineering — platforms (iOS, Android, desktop), free and open source, MIT, E2E encrypted mobile app, multi-provider, team server, store links
- github.com/slopus/happy — mobile app iOS/Android/web, relay server, MIT license, stars (API 24232 on 2026-10-20), last push
- api.github.com/repos/slopus/happy — stars, license MIT, pushed_at 2026-10-19
- api.github.com/repos/slopus/happy-desktop — desktop repo MIT, 94 stars, pushed 2026-10-20
- apps.apple.com/us/app/happy-codex-claude-code-app/id6748571505 — iOS price Free, in-app purchase Plus Plus Monthly $19.99, v1.8.0 on 2026-10-07, iOS 15.1+, rating 4.86 (1033 ratings)
- play.google.com/store/apps/details?id=com.ex3ndr.happy — Android app exists, Updated on Oct 3, 2026
Not verified
- ssh, sftp, tabs, split_panes, port_forwarding, jump_host, x11, serial, telnet, mosh, cloud_sync, scripting_or_api, git_worktrees, mcp: not documented on pages read
- Purpose of the $19.99 'Plus Plus Monthly' in-app purchase is not explained; it may conflict with 'free' wording
- Google Play in-app purchase prices not extracted reliably (page mixes in other apps' prices)
- Web client is listed in the README only; app.happy.engineering is a JavaScript-only page that could not be rendered
- Hint said 'web' and 'MIT, E2E' - confirmed; Grok support and desktop apps were not in the hint