Over the weekend the Microsoft Heath app for the iPhone was updated. The app which you currently used to manage your Microsoft Band is going to be expanded by Microsoft to include data from phone sensors, unfortunately this update just contains bug fixes and no extra integration. With Microsoft’s cross platform focus I wouldn’t be surprised if they added support for the Apple Watch in future releases.
You can find the app in the iTunes Store.
What’s New in Version 1.3.10421
• Bug Fixes