The lack of applications on the Windows Phone platform is a serious problem Microsoft must fix if it wants to be a viable alternative to Android and the iPhone. The company on Friday revealed that the Windows Phone Store is now home to 145,000 apps and games, significantly less than Google and Apple’s offerings, and only slightly more than BlackBerry. It appears that developer interest for Microsoft’s mobile platform has slowed as well. Last June, the Windows Phone Store saw tremendous growth, doubling the number of apps in a six-month period to total 100,000. In the past 11 months, however, less than 45,000 new applications were added to the marketplace.