WKRunsIndependentlyOfCompanionApp
A Boolean value indicating whether the user can install and run the watchOS app independently of its iOS companion app.
Discussion
Xcode automatically includes this key in the WatchKit extension’s information property list and sets its value to YES when you create a project using the iOS App with Watch App template. When you set the value of this key to YES, the app doesn’t need its iOS companion app to operate properly. Users can choose to install the iOS app, the watchOS app, or both.