This app is primarily used to measure magnetic field strength all around. It could also be used as a metal detector. This app contains the following features:

1) The magnetic field measured by this app is the total magnetic field in the device's vicinity without device bias (Earth's magnetic field plus surrounding fields, without device bias).

2) Plot the measured data in real time.

3) Multiple units supported: nT, µT, mT, mG and G.

4) Measurement duration and measurement frequency are customizable.

5) Users could set alert value to some level (Ex. 120 µT). When the measured magnetic field exceeds the alert value, it will alert users.

6) The location information of the measurement points could also be obtained, and all the measurement points could be shown in map.

7) All measured data could be exported as a csv format file for post process.

8) In addition, users could also add photos, videos and voice records to the measured data, and the photos, videos and voice records could be downloaded through iTunes.

What’s New

Version 2.5

Support for iOS13

Ratings and Reviews

2.3 out of 5
6 Ratings

6 Ratings

Bloomwild ,

Does not work

I am going to be requesting to have my money refunded. I work with electrical engineers and we have actual Gaus meters. We compared the readings with the app and they are not accurate at all. In fact the readings don’t change at all. They read constantly at about 35-45 never changing no matter what. We tested it on large distribution lines and which should have sent the numbers soaring but they didn’t change. :( bummer

D!S1SMe ,

Doesn't work on iPad pro

Doesn't work on iPad pro

Ted Kenyon ,

Eye opener!

I measured my awake Ipad air 2 at 157 micro T, my awake Galaxy Tab A was 1833 micro T and the awake HP laptop was 337 micro-Tesla. This shows that there dangerous levels of microwave radiation with wifi devices!


4.8 MB

Requires iOS 13.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Japanese, Simplified Chinese, Spanish, Traditional Chinese

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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