The log of the orientation sensor is displayed in the graph.API Reference( http://goo.gl/EWA3c )Top graph is azimuth.Middle graph is pitch.Bottom graph is roll.4 is for OS 1.6.This application icon is Japanese Yajirobee.Another Graph is replace Accelerometer Sensor and Magnetic Field Sensor.Gyroscope Graph is gyroscope sensor device only.More Infos : http://goo.gl/txuSOGoogle Group : http://goo.gl/JFtfL