I take it that it doesn't work with the ipads.
Of course it doesn't work with the iPads, it's an app for the Mac OS X 😇.
Seriously, how would you connect the DSLR to the iPad? Wirelessly?
I guess there are two potential ways to make it work. First is the exactly the way you propose — Wi-Fi, but it will work only with the limited set of Wi-Fi-capable cameras like 5D mark III, 6D and 70D. Too limited to put effort into it. I have no experience with externally-attached Wi-Fi handles, so I cannot speak for other EOS models. Second, we can try to connect camera to iPad with a standard USB cable via Lightning to USB Camera Adapter. I am not sure that either of these methods could produce a PTP-connection to the camera, that is required for the app to «speak» with it.
Does anybody of you guys think it is a good idea to have this app ported to the iOS?