Download Harnes Code
The Windows app does the work; the Android app is for sign-up, credit and remote control. You need both.
Windows
Windows 10 and 11 (64-bit)
Download installerIf Windows says “Windows protected your PC”: More info → Run anyway. The app updates itself.
Android
Android 7 and later
Download APKWhen installing, allow “install unknown apps” for your browser.