A gold detector is a useful tool that helps you to detect the presence of gold and other metals.

This application can also detect other precious metals such as silver, platinum, palladium, rhodium, iridium, and ruthenium.

The application uses the magnetic field sensor to measure the magnetic field intensity. 

If the intensity of the magnetic field is higher than the expected value, it means that there are precious metals present.

The application is useful for finding precious metals, especially gold.

The best part is that this application is very easy to use and does not require any special knowledge to operate.