The Demo version is free, but has a limited duration license. You will need to come back here every couple of months to download a new installer if you want to keep on using UVLayout.

Nvidia Bug. We have been getting reports of UVLayout not loading files for some hardware/driver combinations on Nvidia GPUs. One user noted that drivers up to version 516.59 worked OK for them, but 531.61 and above crash out.
Download and open the ZIP file below to install the Demo version of UVLayout for Windows platforms. If Windows Defender blocks you from running the EXE, click More info to enable the install. See Installation_Guide:_Windows for full installation instructions

After installation, you can run UVLayout by drag’n’dropping OBJ files onto the “UVLayout Demo” icon.