IN DEPTH: 7 best iPhone health apps for iOS 8

What is The Apple Health app and best fitness With the arrival of iOS 8, health is suddenly a big focus for Apple. So much so that the iPhone maker has made a dedicated Health app. This official iPhone Health app keeps track of everyone's important biometric data and also records steps though the Apple's M8 and M7 co-processor within the iPhone 6, iPhone 6 Plus and iPhone 5S.What's more, these fitness metrics can be corralled from and shared with many of the third-party health apps on i