Watch os 2.0 beta: access heart beat rate

Question

With Watch OS 2.0 developers are supposed to be allowed to access heart beat sensors.... I would love to play a bit with it and build a simple prototype for an idea I have,

Answer 1

Many of software kits for iOS are now available for watchOS, such as HealthKit. You can use HealthKit (HK) functions and classes in order to calculate burned calories, find heart rate, etc. You can use HKWorkout to calculate everything about workouts and access the related variables such as heart rate, just like you did with iOS before. Read developer documentations from Apple in order to learn about HealthKit. They can be found in developer.apple.com.