Download

Get Thermal Canary Pro

A single self-contained AppImage. No install step, no root required, works on any modern Linux distro.

v0.6.15Released 2026-08-18

This is the same license-gated binary used by every Pro customer. Activate it with the key from your order confirmation or receipt email.

SHA256loading….sha256 file·.sig file

Running it

chmod +x latest.AppImage
./latest.AppImage

Already own a license? Open Settings → License and paste your key to activate. Just trying the free tier? The app runs fully featured without a key, minus the Pro panels.

Updating from an earlier version

chmod +x latest.AppImage
mv latest.AppImage ThermalCanary-Pro.AppImage

Just overwrite (or replace) your old AppImage file with the new one - there's no installer to run. Your license stays activated: the token lives in~/.config/thermalcanary/, not inside the AppImage itself, so there's no re-activation and no re-entering your key. Keep the old file around until you've confirmed the new one launches cleanly.

Verifying the download

The SHA256 above only catches a corrupted transfer, not a tampered file - it's hosted next to the artifact it checksums, so a compromised release step could recompute both together. The .sig file is a real integrity check: it's signed with a dedicated Ed25519 key that never leaves the machine that publishes releases.

curl -LO /release/latest.AppImage
curl -LO /release/latest.AppImage.sig
curl -LO https://thermalcanary.com/verify-appimage.py
python3 verify-appimage.py latest.AppImage latest.AppImage.sig

Needs the cryptography package (already installed on most distros, orpip install cryptography) - the verification key is already embedded in the script, no separate download.

See what changed in this release on the changelog, or read the source of the free app onGitHub.