Attention . . . this App need a Accelerometer Sensor for use! This Sensors can be found in most Mobile Devices like HoloLens, Smartphones and Tablet PC's. With Accelerometer Analyzer you can check Flat Surfaces "Spirit level" or check the function of the Accelerometer sensor. A Accelerometer is an instrument for measuring acceleration, typically that of an automobile, ship, aircraft, or spacecraft, or that involved in the vibration of a machine, building, or other structure. It has the following features: • shows Tilt, shakes and vibrations in real time • Orientation lock. Set yourself your preferred orientation Beware! We can not guarantee 100% accuracy. Because the sensors do not always work 100%.