Motorola's Droid Zap, an exclusive feature for Verizon's 2013 DROID line, always seemed a bit on the limited side. Maybe that's because only those three DROID phones could actually use the service - other phones could receive photos from nearby users with the Zap app, but only the DROID Ultra, DROID Mini, and DROID Maxx could send them. Today Moto has seen the light and made both sending and receiving photos possible for any phone.
If you've never used Zap, it goes something like this: open the Zap app and you're given a list of your local photos. Tap and drag up with two fingers, and your phone creates a "virtual sharing zone" around your GPS location. Anyone with the Droid Zap app installed who's inside that area will be alerted, and can download the photo to their device. Users can add a PIN to the download for a little extra security.
So if this is now a universal local sharing app, why is it still labeled "Droid?" Well according to the app description, non-Droid phones (including Motorola's own Moto X and Moto G) don't get access to the ability to share files, just photos. There's also a new DROID-exclusive feature: Zap Zone. Basically you invite your friends to a time-limited event, and any photos you take with your phone will be automatically synced to theirs. So it's exactly as useful as a Facebook album or a shared Dropbox folder, but it's... faster? And you need at least one of the 2013 Verizon DROID phones to do it.
Or, you know, you just email them.