You've heard of Instagram, right? Are you familiar with Microsoft's Photosynth and Google's Photo Sphere on Nexus phones and tablets? How about Apple's brilliant continuous-scan panorama mode on iOS devices? Well mash all this up and you get TourWrist, an app / social network for sharing photo spheres. The app started life as a social network for virtual tourism and gained one million users since launching in 2010. Here in Las Vegas, the company just launched the latest version of TourWrist with a focus on capturing photos spheres. Unlike Microsoft's and Google's approach, which stitches 360-degree images from discrete pictures, the app uses continuous-scan like Apple's panorama mode. The resulting photo spheres are truly impressive and look significantly better than the competition, especially when captured in tricky lighting conditions. All 360-degree images can be shared with other TourWrist users, Instagram-style, and with other social networks by linking to an HTML5-compatible viewer. Take a look at our gallery below and peek after the break for our hands-on video and sample photo sphere captured on site.