Dave, I started with an Apple II for business and when the software moved to IBM, I went with it. I had tried the newer versions of Apple and did not like them. It wasn't until I got an iPhone and my wife, an educator in a prior life urged me to try again. I will never go back to a pc. I wish DJI would port their products to OSX as well. That was one of the things I liked about the Arduino FC's I could configure them on my Mac. Yes WinRar is the file that is needed. You can choose to donate or not.