7. Implementing HealthKit

People all over the world are becoming increasingly interested and concerned about their personal health, and they are leveraging technology to gain valuable insight. The rise of smartphones enabled common consumers to carry a computer with them wherever they went, and it wasn’t long before a rush of third-party fitness and health apps followed.

Health-focused mobile apps were a $2.4 billion industry in 2013, and this is projected to grow to more than $20 billion by 2017. Each quarter more than 100,000 new health apps are published to the iTunes App Store, and until HealthKit it was complete chaos. Due to the sandboxing nature of the iOS platform, these apps haven’t been able to share data with other third-party apps. ...

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