In this chapter we covered some powerful features of WatchKit. By communicating between our WatchKit extension and our iPhone app, we unlock the full potential of our app without having to conform to the restrictions of the extension environment. Combined with App Groups for data sharing, these features mean our iPhone and Watch apps can be in perfect sync at all times. In the next chapter we’ll take the final steps with our watch app, polishing it to a point where it’s ready for the App Store.
Refer to Apple’s App Distribution Guide: https://developer.apple.com/library/etc/redirect/DTS/iOSAppDistGuide.