Windows Phone users wanting to browse 500px photo galleries have so far had to rely on unofficial apps, but they can now go straight to the source thanks to an official app for Microsoft's platform. As on Android and iOS, this is primarily a passive experience; you can check out friends' activity with the Flow feature and search for interesting snapshots, but direct uploads aren't an option. There are two OS-specific perks, though -- you can introduce 500px photos to both a Live Tile as well as your phone's lock screen. Grab the app from the Windows Phone Store today if you're looking for an alternative to other services like Flickr.