If you're an Android, iOS or Mac user who doesn't like the stock calendar app on your platform, you've probably tried (or at least heard of) Sunrise, whose socially-savvy software often fills in the feature gaps. And apparently, Microsoft has tried it too -- both TechCrunch and Recode claim that the Windows maker is buying Sunrise. While the reasons for the reported acquisition remain a bit opaque, our TC colleagues say that the Redmond crew will preserve Sunrise's existing apps while folding some of their features into Microsoft products. Neither Microsoft nor Sunrise has commented on the claim so far. However, it's pretty easy to imagine both Windows and Outlook getting upgraded calendars that will keep you from scrounging for alternatives.