Magnetic Pole Detector

Magnetic Pole Detector-Identifier-Tester for Magnets (You need a phone with a magnetic sensor onboard, for this app to work!)Pole detection of permanent magnets.How does it identify the north and south poles of a permanent magnet? Simply press the yellow button and the tester is active for 5 seconds. Withinh those 5 seconds, place the tip of the phone (red mark) near the magnet's surface If it's the South Pole, the Blue button will glow. If it is the North Pole, the Red button will glow. And if the button is pusehed and the phone is moved around the surface of the magnet....you can see the transition from one pole to another. It can be used for rare earth magnets such as neodymium magnets, SmCo magnets, AlNiCo magnets, Ceramic magnets, refrigerator magnets and most other magnets.This app is free but it is supported by ads.