By integrating the Apple HealthKit framework in a health and fitness mobile app, different features can be added. The Apple HealthKit framework can collect, store, analyze, and visualize health and fitness data. Apple HealthKit uses users’ permission to store such data on different devices such as the iPhone and Apple Watch.
The architecture and design of the Apple HealthKit framework enable meaningful social interactions across devices. To truly work across devices securely, the Apple HealthKit can easily be used in a multithreaded environment. The user-generated data is kept locally in encrypted form when the device is locked.