EMF Scanner is a free utility application for Android that allows users to detect electromagnetic fields (EMF) in their environment using their phone's built-in magnetometer. The app provides readings in microtesla (µT) and milligauss (mG), making it accessible for both casual users and those interested in studying electromagnetism. Users can explore their surroundings by moving their device to identify sources of EMF, which can include electronic devices, metals, and possibly even paranormal entities.

The interface features a digital meter and a classic LED needle meter for displaying readings, making it easy to understand the results. However, it's important to note that the app relies on the presence of a magnetic sensor; if the sensor is not available on the device, the app will not function correctly. Users are also advised to avoid using the app near powerful electrical devices to prevent potential damage.