I have some experience building WatchKit Apps. I'm building out the companion App for my virtual trainer: http://impactfit.co http://impactfit.co It's very ea

I have some experience building WatchKit Apps. I'm building out the companion App for my virtual trainer: http://impactfit.co http://impactfit.co It's very early days with WatchKit. You can understand most of the SDK by just looking at the header file for WKInterfaceController. A Watch App is basically a Today Widget Extension.