A free app for Android, by Sylvain Saurel.

A magnetometer is a device that can detect and measure magnetic field strength.

The most common use of a magnetometer is to measure the magnetic field in nature. However, it can also be used to detect other magnetic fields. It is a handy device for finding iron and steel nearby, which can be used for various purposes.

It is a handy tool for anyone who needs to detect the presence of metals nearby.

How to use it?