Dashboard running on an iPhone
|Preview release||All models: iOS 8.0.2 (12A405) / September 25, 2014|
|Operating system||iOS 8|
|Type||Health informatics, Physical fitness|
The application is intended to be a personal and central data collection point, for connected third-party electronic accessories and wearable technology, that can directly monitor and analyse an individual's biochemistry and physiology for medical and general fitness purposes.
It displays a dashboard of all the fitness and health data of the user, including the heart rate, calories burned, blood pressure, blood sugar, cholesterol, and other similar functions. Users can also use the Health app to create a Medical ID, an emergency card with important medical details and emergency details. The Medical ID is accessible from within the Health app or from the lock screen 
HealthKit is the accompanying developer application programming interface (API) included in the iOS SDK (Software Development Kit) for the Mac. It is used by software developers to design applications that have extensibility and that can interact with the Health application on iOS.
The API allows other applications with the user's permission, to access health data. For example, a blood pressure application would share information with a doctor, or a nutrition application could inform a fitness application how many calories a user consumes each day.
Shortly after the release of iOS 8 on 17 September 2014, Apple forced HealthKit-compatible apps to be completely removed from the App Store because of some issues with HealthKit. Apple is expecting to have the bug fixed by the end of September 2014.
Apple fixed a bug affecting Healthkit, with the release of iOS 8.0.2 on 26 September 2014. Since the release of iOS 8.0.2 an increasing number of apps with support for HealthKit have become available on the App Store.
The following hardware is HealthKit enabled:
Compatible iPhone Applications
The following apps are HealthKit enabled:
|Application||Writes data to Health||Reads data from Health||Version|
|Health Mate by Withings||Active Calories, Resting Calories, Body Fat Percentage, Body Mass Index (BMI), Diastolic Blood Pressure, Systolic Blood Pressure, Walking + Running Distance Heart Rate, Height, Oxygen Saturation (SpO2), Sleep Analysis, Steps, Weight||2.3.0|
|Human||Active Calories, Cycling Distance, Walking + Running Distance, Workouts||Date of Birth, Weight||tbc|
|Lark||Sleep Analysis, Workouts||Dietary Calories, Sleep Analysis, Workouts||tbc|
|UP||Sleep Analysis||Sleep Analysis, Steps|
- "Apple - iOS 8 - Health". Apple Inc. June 2, 2014. Retrieved June 27, 2014.
- Zac Hall (2014-09-17). "Apple seemingly removing HealthKit compatible iOS 8 apps from App Store due to issues (U: Apple statement)". 9to5Mac. Retrieved 2014-09-18.
- Mike Beasley (2014-09-26). "Apple releases iOS 8.0.2 to address cellular and Touch ID issues in previous update". 9to5Mac. Retrieved 2014-09-26.
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