The FLUXMETER™ Measures the invisible electromagnetic fields that surround us
This free utility uses your Apple device's built-in magnetometer to scan for 50/60hz alternating current (AC) waves, emitting 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.