Gold Detector App Gold Detector app is an application or app that is installed on smartphones or tablets, whether it. is running Android operating system, such as Samsung, Huawei or Nokia devices, or iOS devices from Apple such as the iPhone or iPad. These applications (apps) for detecting gold or metals in general depend on magnetic sensors present in most modern smart phones and tablets , So that the application depends on measuring the change in magnetic fields around the phone using this sensor and the digital value within the application is displayed on the device screen visually either as a visual indicator or graph ( circular or rectangular) or variable number and the display method differs from one application to another application but within the same general idea. Gold detectors and metal detectors rely on various technologies to search for gold, precious metals and buried treasures. Metal Detector App Metal Detector app as explained previously can be used to detect me.