Fluxmeter

Measure the invisible electromagnetic fields that surround us. This utility uses your device's built in magnetometer to scan for 50/60hz alternating current waves, emanating from power lines and unshielded devices that use alternating current, such as desk fans, space heaters, or toasters.

Fluxmeter uses a proprietary algorithm to "zero" out the Earth's magnetic field, allowing measurement of the local area magnetic flux only.