WatchKit app wont run on simulator

Question

error: WatchKit Extension doesn\'t contain any WatchKit apps. Verify that the value of WKWatchKitApp in your WatchKit App\'s Info.plist is set to YES.

Answer 1

I had to change the compiler for extension & watch app, probably because I added Watchkit App to old project.

Go to Build Settings "Compiler for C/C++/Objective-C" of extension and watch app, and make sure it's "Default Compiler".