Metal Detector / EMF Meter 4+

Steve Yoes

Designed for iPhone

    • 4.2 • 29 Ratings
    • $0.99
    • Offers In-App Purchases

iPhone Screenshots


Convert your iPhone into a EMF Meter (electromagnetic field tester).
By utilizing the internal compass hardware. You can view the raw data of the magnetic fields that are all around you on a digital display.
Record your findings with our new feature “Readings Log”
In-app email- Send your readings while you continue to use this app.
Scientist, Teachers, Students, Engineers, Ghost Hunters, all use EMF Meter's for detecting magnetic fields of all types.


-Detect the strength of Magnetic force fields on all three axis’s (x,y,z)
-Magnetic force is calculated in microteslas ( µ T )
-Record your readings with a time & date stamp of each event.
-Pause Magnetic readings with the (Clock) button. To take a reading for an experiment.
-Find metallic objects that are hidden behind walls, or under ground. (Ferromagnetic)
Settings available: (With in-app upgrade)
- Auto sleep disable / enable
- Reading calibration
- Threshold for readings
- Alarm for readings
- Reading interval / timer
- With settings unlocked you have full control of sensor and data logging.

The observed magnitude is the strength or size of the magnetic vector in microteslas ( µ T ).

Please observe and respect the iPhone user manual and warranty if you intend to use your iPhone as a scientific device. We are not responsible for any damage that you or any other force of nature may cause to your device.
Instructions for the settings are included on the information view.

What’s New

Version 2.1

This app has been updated by Apple to display the Apple Watch app icon.

Fixed long over due bug.
Improved Operation
New Icon

Ratings and Reviews

4.2 out of 5
29 Ratings

29 Ratings

swagyolopopeyes ,

Interesting app

It seems to work well. I tested it by placing my phone near a weak earth magnet and a piece of metal, and the graphs responded accordingly.

creekbound ,

Good app

Detects changes in field strengths. It can even detect a flash drive within a few inches. Also detect the oncoming of a storm by detecting the static electricity buildup in the atmosphere. It has numerous applications it could be applied to. ""But""I would like to see this app be able to recognize and categorize different field sources......Other then that it's a good app and works as well they claim it to be able to.

Pieceofwhitetrash ,

Works Very Well

Didn't expect too much when I downloaded it, but is actually quite accurate. Would spike when I turned my lamp on and off, and went crazy when next to me neodymium magnet. Just use airplane mode to get rod of ads.

App Privacy

The developer, Steve Yoes, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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