Third-Party Health and Fitness Apps
Although the built-in health and fitness apps are well designed (as we have all come to expect from Apple), they do not have the depth that is available from developers whose whole business revolves around health and fitness. Many mature health and fitness apps are available for the iPhone. Some of the best of these have extended their iPhone apps to make use of the convenience and added functionality of the Apple Watch. In this chapter, I will give brief descriptions of a few of them, highlighting the best features of each and describing the added capability provided by the watch.
In the first release of the software development kit (SDK), Apple did not give third-party developers the ability ...