A free program for Android, by MRE Programming.

This app uses the magnetic sensor of your phone and displays the reading with a line of LEDs and a classic needle meter.

You can easily use this as a detector not only for EMF but also for magnets, metals, devices, and even (as some people believe) paranormal entities.

EMF stands for electromagnetic field. It is a combination of electric and magnetic fields.

The term electromagnetic field refers to the portion of the natural world that contains electromagnetic forces.

In addition to the magnetic and electric forces, the world is also filled with other forces such as gravity, pressure, and warmth. These forces are all part of the electromagnetic field.

When an object such as a clock or a TV is near a source of electromagnetic energy, the energy can change the state of the object. This is called a magnetic effect.

The direction of the magnetic field is indicated by the direction of the needle. When the field is horizontal the needle will be upright and when it is vertical the needle will be downward.

The magnetic field can be measured in units of magnitude (like the strength of a wire) and in units of measurement (such as the angle between the and the line of sight).