Chapter 13
Tracking Fitness with HealthKit and Core Motion
Of all the features that were announced at this year’s Apple Worldwide Developers Conference, the one that took everyone by surprise was HealthKit—Apple’s platform for health and fitness tracking. While health and fitness are two of the largest segments of the App Store, Apple had always taken a backseat in the process, providing APIs and hardware interfaces, but never getting too involved in the software side (aside from developing companion apps for the Nike+ pedometers). HealthKit changes all that, by providing a repository for health data that all developers are encouraged to integrate with, and the Health app, which comes bundled with iOS 8, that allows users to view their stored ...
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