You can read the documentation here
Operating systems currently supported are:
Desktop Linux (64Bit)
MacOS is not currently supported but a build of FT8Call for MacOS is planned.
How to Download the FT8Call softwareSimple, just click the button to go to the downloads page!
From version . 0.5.x the default calling frequencies set up in FT8Call are listed below, but please note these are not set in stone and can easily be changed in your settings, or you can simply manually retune your radio to another frequency.