Not sure if anyone knows. I do know ps now works with Xbox 360 controllers so it should work with input mapper but I can't test it out myself without paying since I already used the free trial they have
And I'm sure someone will ask why wouldn't I just use the dualshock 4 with ps now directly. Quite simply, I need the button mapping that input mapper offers. Ps now on PC doesn't have button mapping built in the way PS4, ps Vita , and ps TV do so I need input mapper to do it's thing.
I use button mapping all the time, and input mapper is how I do it on PC.