Metal Detector is an app that is part of the Smart Tools collection. It requires a magnetic sensor to work properly, and if it doesn't work, users should check their device's specifications. The app measures the magnetic field with an embedded magnetic sensor, and when any metal is near, the magnetic field level will increase. The app is simple to use, and users can find electrical wires in walls and iron pipes in the ground. Ghost hunters have also experimented with the app as a ghost detector, but its accuracy depends on the device's magnetic sensor and is affected by electronic equipment due to electromagnetic waves.<br/><br/>The app's main features include an alarm level, beep sound, sound effect on/off, and material design. The pro version has additional features such as no ads, a compass, sharing GPS location, Qibla finder, and car locator. However, the app cannot detect gold, silver, and coins made of copper as they are classified as non-ferrous metal that has no magnetic field. Users who want more tools can download Smart Compass Pro and Smart Tools 2 package. For more information, users can watch YouTube and visit the blog.<br/><br/>In summary, Metal Detector is an app that measures the magnetic field with an embedded magnetic sensor. It can detect metal such as steel and iron, but not non-ferrous metals like gold, silver, and copper coins. The app is simple to use and can help users find electrical wires in walls and iron pipes in the ground. The app's accuracy depends on the device's magnetic sensor and is affected by electronic equipment due to electromagnetic waves. The pro version has additional features such as a compass, sharing GPS location, Qibla finder, and car locator.