Metal detector

Turns your Android buddy into a metal detector, and show off
Test whether conduit is present behind the wall
Application looks like an electronic device that gives an audible or other signal when it is close to metal, used for example to search for buried objects or to detect metal sniffer free.
Use your phone to detect ferrous objects such as iron and steel. Simply keep your phone flat with the screen on top and swipe it over the area to be scanned.