Wire Metal Detector is the App that allows you to detect power lines (wires) in distance up to 5 inches (12 cm) as well as metal by using a magnetic field sensor of your Android device.
Thus, you can find hidden power lines in walls and other places as well as easy detection of metal objects with reduced false alarms.
The wire detection and metal detection are completely different parts of the App.
In the Wire Detection Mode the App does analyze the magnetic field which created by the current in the AC power lines (wires). Therefore, the relatively powerful device should be connected to the outlet to create the electromagnetic field strong enough. The power consumption of these devices should be more than 200 Watt for better detection. Only 50-60 Hz AC in the wires does effect on this kind of detector. Detection is working only if the Android device is moving very slowly or nonmoving.
In the Metal Detection Mode the App does analyze small changes in the ambient magnetic field. Therefore, in order to detect any metal, the device should be constantly slowly moving around objects. The bigger metal object, the more detection distance will be. Detection is working only if moving occurs.
