From the linked article you can see links to: > Band SDK Preview for Windows Phone > Band SDK Preview for Android > Band SDK Preview for iOS (coming soon) I

From the linked article you can see links to: > Band SDK Preview for Windows Phone > Band SDK Preview for Android > Band SDK Preview for iOS (coming soon) I guess it depends on how much weight you put into cross platform. Even if you just want to support one phone system you get access to a bunch of sensors that aren't currently slated for the iWatch. > Use a range of sensors including heart rate, UV, accelerometer, gyroscope, and skin temperature, as well as fitness data, to design cutting-edge user experiences.