Accelerometer Sensor

Accelerometer Sensor app helps you to see the data that accelerometer Sensor gives

It's gives you X accel Y accel and Z accel

Which is values recorded by accelerometer sensor

(rate of change of velocity). For example, an accelerometer at rest on the surface of the Earth will measure an acceleration due to Earth's gravity, straight upwards (by definition) of g ≈ 9.81 m/s2. By contrast, accelerometers in free fall (falling toward the center of the Earth at a rate of about 9.81 m/s2) will measure zero

This app using your device built-in accelerometer sensor and shows your the X accel value, the Y accel value and the Z accel.