This is a test project to profile graphics performance on different iOS devices.
It can be configured to use views composed of subviews, composed of sublayers or drawn as a flat bitmap with Core Graphics. Furthermore it can be used to measure how quickly a view can be brought onto screen and how smoothly an existing layer tree can be animated.
Please see the blog post at http://floriankugler.com/blog/2013/5/24/layer-trees-vs-flat-drawing-graphics-performance-across-ios-device-generations for more details.