Magnetometer is a utility app designed for iPhone users to detect metal objects and magnetic fields using the device's compass. This free app operates by measuring electromagnetic field (EMF) interference, allowing users to locate items like keys or explore their surroundings for metal. While it provides a playful approach to metal detection, it is essential to note that Magnetometer is not a substitute for professional metal detectors and is intended for entertainment rather than serious applications.

The app offers a straightforward interface that presents users with basic information about the detected interference. Its primary focus is on fun and experimentation, making it accessible for casual users. However, those seeking detailed scientific data may want to explore other applications available on the App Store. Users should also exercise caution, as using the app in sandy or hazardous environments could potentially damage the device.