Soooo.... it's an app you DL on your phone that places a windows executable in your sd card which you can then run from your PC when you connect your phone to your PC which then installs/runs the antimalware program...
That is if the virus lets you access your USB port and doesn't then try to infect your phone
I suppose if you had NO other way at all of getting diagnostic software to your PC (via thumb drive or CDR etc)... If I'm interpreting their website right...