Aside from working on Wear OS together, Google and Samsung are now developing a platform for unified Android-based health and fitness management. Health Connect is a new set of APIs (application programming interfaces) that allows developers to securely access data from different programs so you can sync and track your health information across apps and devices. We understand that this could mean you can use a Samsung wearable and have that sync with a Google Pixel, for example.
Samsung Health, Google Fit, and Fitbit (owned by Google) will adopt the feature. Google collaborates with MyFitnessPal, Leap Fitness, and Withings on an early access program. Health Connect will offer centralized privacy controls. You can give choose which apps to access on-device encrypted data. On the flip side, developers can access the data provided to them for their programs. It is an opt-in platform, so it's your decision if you want to try it out when it launches. Health Connect is now available to developers to help develop the feature.