Apple warns developers over HealthKit data-sharing ahead of iOS 8 launch

HealthKit guidelines aim to restrict developers' ability to share data with third parties

Ahead of its supposed iWatch, iPhone and iOS launches later today, Apple has warned developers working on medical and fitness apps not to share that data with third parties.

The software is created under Apple's HealthKit app, which will store about 60 different types of datasets, such as blood pressure and blood sugar levels and is a part of Apple's latest iteration of its operating system, dubbed iOS 8.

The HealthKit platform, which is expected to capture biometric data such as blood pressure, may be a concern for end users who have been troubled by the recent iCloud security protocols being easily passed by hackers, who got a hold of nude photos of celebrities such as Jennifer Lawrence, Kate Upton and Kelly Brook.

But Apple's guidelines on the HealthKit aim to combat any fears of health data being compromised.

It warns developers that any apps using the HealthKit framework that store users' health information in iCloud will be rejected, for example.

It also states that apps may not use user data gathered from the HealthKit API for advertising or "other use-based data mining purposes other than improving health, medical, and fitness management or for the purpose of medical research".

In addition, apps that share user data acquired through the API with third parties without user consent will be rejected.

Apps must indicate integration with the health app in their marketing text, clearly identify the HealthKit functionality in the app's user interface, and provide a privacy policy, the guidelines state.

Finally, any apps that provide "doctor-like" advice need written regulatory approval upon request, or else will be rejected.