When Microsoft said its Health platform was open to everyone, it wasn't kidding around. The company has revealed that its mobile Health app will soon get step counts and calorie burns from the sensors built into your phone -- you won't need a Band (or any wearable tracker, for that matter) to put fitness data in Microsoft's cloud. The update is due for Android, iOS and Windows Phone in the "coming weeks." Don't worry if you do like the Band, though, as it has a few upgrades in store as well.