Use your phone as a magnetic field detector. This app is used to measure magnetic field(EMF), it shows current magnetic field values(X, Y, Z) and the length of the vector (X, Y, Z), by a value to show how strong the magnetic is.
Here're the features of this app:
1. Metal Detector: By test, some metals, which could react with the magnetic, such as steel, iron, they could be detected by this app.
2. Shows current EMF value, in uT(microTesla).
3. Vector by (X, Y, Z).
4. uT/Time Graph.
5. Vibrator Control.