In this chapter, we covered a very important topic: how to develop apps for the new wearable technology, Apple watch. We first gave a quick introduction about the new device and how it can communicate with paired iPhones. We then talked about WatchKit, the new framework, that enables you to develop apps for Apple watch and design its interface. We saw how it's far more limited than UIKit because you are constrained with a small screen size and very limited resources. Apple has designed the watch to contain only the storyboard and resources files. All logic and operations are performed in the iPhone app in the background. Finally, we saw different ways to create interface controllers, how to build your layout, and different styles of navigation between the interface controllers. In the next chapter we will talk about iOS 8 app extensions. Stay tuned!