According to the latest report from people familiar with the matter, Apple is currently working on expanding the health and fitness-tracking functionality of watchOS on the Apple Watch. In particular, the company is developing a new sleep and heart rate monitoring apps for the wearable device. Apart from that, Apple wants to substantially improve the functionality of HealthKit and the Health app. The company reportedly plans to make the HealthKit platform a “tool that improves diagnoses”; this includes engaging professional doctors and sharing the patients’ data with them.