There are already too many wearable fitness-tracking devices available to keep track of with even more on the horizon, but for anyone using Windows Phone the number of options was still limited. That was partially Microsoft’s fault due to some gaps in its Bluetooth LE support, but now anyone running Windows Phone 8.1 should be able to take advantage of Fitbit’s fitness tracking technology. Fitbit’s Windows Phone app works just like it does on iOS and Android, though it also adds support for Microsoft’s Live Tile interface with quick notifications right on the homescreen. Beyond that, you get real-time fitness stats, graphs to help track your progress, nutritional data for watching your diet, and social features for competing and working with friends and family.