Pricing
One license, two computers, no subscription. Right now it's $24.50, 50% off until December 31, 2026. Try everything free in simulation mode first.
Simulation mode
Download Termethos and try the whole app with a simulated device. Set up your AI agent against the simulated trace and dashboard before you buy.
Termethos license
50% off until December 31, 2026. The code APTERM50 is applied for you at checkout.
Unlock real serial ports, so you and your AI agent work with the actual hardware.
Secure checkout by Polar, our reseller. Any sales tax or VAT is shown before you pay. For Windows and Linux.
| Feature | Simulation mode | Licensed |
|---|---|---|
| Trace levels, boxes, colors and dashboard | Yes | Yes |
| Quick commands, hotkeys and scripts | Yes | Yes |
| Session export and Copy for AI | Yes | Yes |
| MCP server for AI agents | Simulated data | Yes |
| Real serial ports (COM, /dev/tty) | —No | Yes |
| Agent commands sent to your device | —No | Yes |
Simulation mode runs Termethos with a simulated device instead of a serial port. A license unlocks real serial ports.
Polar handles the payment, receipt and taxes for us. We never see your card details, and your bank statement will show Polar.
Polar emails your receipt within a few minutes. Your license key is in your Polar customer portal: sign in with the email you paid with.
In Termethos, paste the key into the banner and click Activate. All features unlock right away, without a restart.
Activation sends your license key and your computer's name to Polar, nothing else. After that Termethos works offline. When it's online it checks the key again about once a month, and it keeps working if it can't reach the server. Anonymous usage data is sent only if you agree to it when Termethos first starts. License FAQ
Feel free to ask at admin@termethos.com. We usually say yes.
Download Termethos and try it free in simulation mode. When you're ready, a one-time $24.50 license unlocks real serial ports, 50% off its usual $49 until December 31, 2026.