This - https://developer.apple.com/forums/thread/122660 fixed my problem. Basically, I created the folder (not using Xcode) and create an Info.plist inside that folder. Add the purpose string into Info.plist. Then, go to Xcode, find the target (the one that doesn't contain "Watchkit"). Go to Build Settings -> Packaging -> Info.plist File, enter your plist file location.