Gauss meter - Magnetic sensor is a free app for Android devices that measures magnetic flux density in microtesla (μT) units using a three-dimensional magnetometer. The app is developed by oxdb.net and falls under the category of Utilities & Tools.

The app measures the magnetic flux density at the side of the magnet S pole, and it is positive. On the other hand, it is negative at the magnet N pole. The X-axis is the upper side of the screen, the Y-axis is the right side of the screen, and the Z-axis is the front side of the screen. The app is simple to use, and the readings are accurate. 100 μT equals 1 Gauss, which is the maximum value for northward, and the minimum value for southward. The Gauss meter - Magnetic sensor app is an excellent tool for measuring magnetic flux density and is available for free on the Google Play store.