GPicSync is described as 'Automatically inserts location in your photos metadata so they can also be used with any 'geocode aware' application like Picasa/Google Earth, Flickr, loc.alize.us, etc' and is an app in the travel & location category. There are more than 10 alternatives to GPicSync for a variety of platforms, including Windows, Mac, Linux, iPhone and iPad apps. The best GPicSync alternative is XnView MP. It's not free, so if you're looking for a free alternative, you could try XnView MP or Shotwell. Other great apps like GPicSync are Diffractor, Zoner Studio, Excire Foto and Phototheca.