Content development on MacOSX, or windows only ?

I have a client that only has an apple computer. I work under windows. How should I go about having him install my Gear VR app? The only solution I have insofar is asking him to access a windows PC, install drivers for his phone, have him follow the many steps required to get the his Device ID which I’ll then use to generate the relevant osig file that I’ll replace mine with and then run the .bat file to install the app on his phone. This is a bit of a stretch, and installing a mac OS is something I’d rather avoid and wouldn’t save that many steps.
Thanks,
George