By simply taking two, three or more shots, the application remembers the orientation of the camera and overlays the images at angles to fill in the space between, creating a clever, interactive, three dimensional effect. Stills and grabs don't really do the effect justice, but the following video gives more of a feel for the effect:
Like other photo apps on the market, Stilla images can be shared on social media websites such as Twitter and Facebook, or via email. Web viewing works best with the latest versions of Chrome, Safari and Firefox. Because the app relies on the gyroscope of later Apple devices to measure the orientation of the camera as photos were taken, the app is only compatible with iPhone 4, 4S, 4th generation iPod touch and iPad 2 or later. An Android edition seems unlikely.