Mac (Apple silicon, macOS 12 and later — signed and notarized), Windows (64-bit, preview) and Linux (AppImage, deb, rpm). On the web and iPhone, use LetThemChat — same account, same sessions.
Free plan · no card · your keys, your CLI subscriptions, or ours · see plans
First run, in order: sign in (the free plan is free) · pick how the seats run — your API keys, the Claude Code, Codex, Gemini CLI or Grok Build install the app finds on your machine, or our keys · open a folder · tell the group what to build.
The Mac app where the group builds. One seat leads in a git worktree on your machine; the others read the diff, re-run your build and tests, and say what they found — on a receipt under every answer.
macOS
128 MB · Aug 19, 2026 · notarized · Apple silicon
Windows
101 MB · Aug 19, 2026 · 64-bit · preview
Linux — AppImage
132 MB · Aug 19, 2026 · any distro
Windows preview is not yet code-signed — SmartScreen will ask once; choose More info → Run anyway. Checksums below.
The companion. Your sessions, your account, your plan — synced. Read what the group built while you were away, ask the four of them anything, steer the next round from your phone.
iPhone
iOS 17+ · voice mode, branching, team sharing
Web app
any browser · nothing to install
Install the web app, no download: in Chrome or Edge, look for the install icon at the right of the address bar — it puts LetThemChat in its own window with a desktop icon. It is the same web app; LetThemBuild above is the Mac app that works on your files.
Every plan includes every surface. Pay for the room, not the models: bring your own API keys, run seats on a coding CLI you already pay for, or use our keys and pay for what you use.
SHA-256 checksums computed from the exact files this page serves. Compare with shasum -a 256 <file> on macOS and Linux, or certutil -hashfile <file> SHA256 on Windows.
| LetThemBuild-mac.dmg | dc5d3ada38cac1650323d01afef61e5b0f08a487c55a6dce632af3915ba9cf1c |
| LetThemBuild-windows-setup.exe | 87bb85ba8fc4e43f34a394c89b90806ce9d8427ca7c34cb48a9ce8309339269c |
| LetThemBuild-linux.AppImage | 94bee7470156a1561df4c313645b08d5d8556518afe2a3c2a7b923babbc82985 |
| letthembuild-linux.deb | 656e88e24b9aa584f3b2b08a1040caedcc2dd9292e5f5f45b1e9448000a8bdf2 |
| letthembuild-linux.rpm | 88c81bfc17737c24015c314ca618d78b88173adc0e72e775e910573490a18af3 |