A free app for Android, by Commander Apps – Games.

This app is a handy utility for Android devices that lets you test the various sensors built into your device. The app is very easy to use, so even if you have no idea about how to test sensors, you can do it without any problem. The app supports a wide range of sensors, including the most common ones.

This app can be used to test the following:

Accelerometer

When the device is moved, the accelerometer should detect the movement and the angle of the device.

Magnetometer

The magnetometer can be used to detect the magnetic field strength. When the device is placed near a metal object, the value should increase.

Gyroscope

The gyroscope can be used to detect the rate of rotation.

Barometer (pressure sensor)

When the device is moved, it should detect the change in the pressure.