Two new IPhone Apps show the power of OpenGL ES 2.0 shaders on the PowerVR SGX graphics chip in the new IPhone 3GS. Quaternion Julia Raytracer is the first real-time GPU raytracer for the IPhone 3GS. It renders the quaternion Julia fractal with high accuracy. By modifying the fractal parameters, an unlimited number of complex shapes can be generated. iGPUTrace creates fully interactive photorealistic images of shiny spheres in photographed environments. The compass and accelerometer controls the camera movement in 3D space.