Metal Detector description

Turns your cell phone into a metal detector.

*OPEN HELP FIRST, read instructions. It's not magic and it's not a fake app.
*If you're at a PC, it'll interfere with the readings, so set it on a desk, zero, then wave stuff on top of it.
*It can't detect some stuff like aluminium.
*D/L probs aren't me; contact google.