Did you ever want to know, if your lamp is made of metal or plastic? Or would you like to check the old cutlery on silver?
Then take a look at the Magnetic field detector. You can use this tool to find metallic, magnetic or electrical objects. But how does it work?
The app measure the magnetic field, by using the magnetic sensors, which are used in the device. Then the data gets analysed and displayed.
Sounds great right?? Check it out! Magnetic field detector costs $0.99.
Link: Magnetic field detector