This is a simple app for head mounted devices with adjustable lenses to set the perfect lens position. Tested on a Google Nexus 4 with the OpenDive. Supports all Android compatible HMDs with Gyroscope like: Durovis Dive: www. durovis. com. Refugio3D: www. refugio3d. net. Coogle Cardboard: Samsung Gear VR: VReye GO:...