I created this app to help me detect vibrations in my model airplanes. The app displays graphs of the three axes of the accelerometer.
You can send the accelerometer reading by e-mail (only the last 1000 readings, about a minute and a half).
Touching "Sound", the system will convert the oscillations of the axis in sound.
The Z axis has been adjusted to eliminate the force of gravity, to disable this adjustment tap "1 G"