In the Samsung Galaxy S6 there is a S Health app that measures heart rate, SpO2, stress and other values. It looks like I can purchase additional apps for this. Is this S Health exclusive to Samsung? When I search online Google Fit API shows up. I'm starting from scratch on my knowledge of this subject.
Background:
I want to make an app that accesses the API's above but I'm not sure if it's an Android API, Samsung API open to developers or a closed Samsung API. How does it all fit together?
S Health is now available on a variety of Android devices and is no longer exclusive to Samsung devices.
To make an app that interacts with S Health, you will need an Android development environment and the Samsung Health SDK. This can be found at: http://developer.samsung.com/health
The SDK download also includes a programming guide that can get you started. There are also sample apps that interact with S Health here: http://developer.samsung.com/sample-app/list.do