Best Metal Detector with Sound is a free smart phone app for Android devices that can detect and identify the presence of metals and other elements in the environment. It uses the built-in magnetic sensor to detect any changes in the magnetic field, and the result is displayed on the device's screen.

This is a useful tool for finding any metal that is present in the environment, and it can also be used to find any hidden objects or equipment that is nearby. It is a good idea to check your environment to make sure that there are no problems or hazards that can cause damage to your health.