Woks well!
Fake
Response from developer
The app is measuring magnetism very precisely. Any ferrous material is magnetised, the question is - how much. The sensor is sensitive enough to read the Earths magnetism (that's how compass on iPhone works), so if you put anything ferrous near sensor - yes, it will sense it and it will sense if from far apart. That's why app needs calibration - to measure the background electromagnetic field and be able to compensate for that. If you read instructions carefully you know that you need to place the watch 0,5 inches away from the sensor to get correct readings (and see the threshold where watch is considered magnetised too much). If interested, you can buy me a coffee in the app, that will enable toggle for entering into "Bells and whistles mode" where you can see different actual measurements in microteslas for all three dimensional axes from which the electromagnetic field strength is being calculated. I hope you will revise your rating after this.
Misleading
If you bring ANY ferrous material near the phone’s compass sensor, it will detect magnetism, regardless of if it is magnetized or not. The app measures changes in magnetic field strength, which is not the same as measuring magnetism. It is simply detecting if there is something that affects the magnetic field strength. Even after demagnetizing several small screws, tweezers, and watches, this app detects them as magnetized, even though none of them are. You will get many false positives if you bring a ferrous item in close proximity to the sensor area.
Look no further than…
Best I've found
Response from developer
Thanks for kind words!
A total waste of time
Response from developer
Did you followed instructions and placed it stationary during calibration? According to analytics most users don’t have any issues calibrating with iPhone 15 Pro Max.
