The 2 in one app that acts as a gyroscope and accelerometer.
Measures:
1) the flatness of a surface (tilt)
2) changes in location in all planes.
3) measures vibrations and shakes.
4) Records and measure the shakes
5) Potential use to measure shakes in a clinical setting e.g. Parkinsons
6) Can be tweaked to function as a pedometer to track exercises.