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Историческую версию Magnetometer можно получить на Android
Приложение, предназначенное для обнаружения и отображения рядом магнитных полей.
Magnetometer is a simple application that can detect and dynamically display nearby magnetic fields! Has the capability to estimate a local magnetic field based on your location, using the World Magnetic Model. Can be used as a VERY basic metal detector.
Please don't download this if you don't know what a magnetometer does