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EMF Detector

By Excelltech Inc.

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Explore the magnetic and electromagnetic fields all around you with EMF Detector!

Your new iPhone 3GS can detect how strong the magnetic fields are with respect to the x, y, and z axes. Now you have access to this information in a interesting and responsive way.

Run the EMF Detector around your walls to discover any leaking electromagnetic fields (EMF) coming from faulty wiring (or paranormal activity!). Use it as a metal detector -- you'll notice that the needle will rise a bit when you place the device near ferromagnetic metals (such as steel and iron). Or, simply show off how cool your new iPhone 3GS is by watching the sin wave of EMF activity generated by a nearby motor is plotted before your eyes.

Simply load the EMF Detector on your 3GS iPhone, and you will immediately see the magnetic forces detected by the phone plot in real time, allowing you to easily identify fluctuations in magnetic (MF) and electromagnetic (EMF) fields. The computed magnitude of the detected field is also indicated by the needle display to aid you in hunting out those magnetic hot zones. Have fun!

What's New in Version 1.20

smoother needle display
sound controls on info screen

iPhone Screenshot

iPhone Screenshot 1

Customer Reviews

Great 3GS app buts needs some tweaks

This is app actually works great, but it does require an iPhone 3GS to function. This should be made more clear to the buyer and the name should be changed to gauss meter because it more acurately describes what the app really does. An EMF meter reads AC signals and a Gauss meter reads DC signals. Since this app draws it's data from a magnetometer it's clearly a gauss meter which explains why it reads micro-tesla instead of milli-tesla like an EMF meter should. Those two issues explain away the negative feedback this app gets, this really is a great app for what it is. It would be even better if the app had a setting for turning off the iPhone sleep function.

Thanks for the cool programming!

Works great but not as they claim

It is a great iPhone EMF detector limited by the iPhone sensors- and so it can not plot the sine wave of an electric motor as the developer claims. No iPhone EMF app can have that ability. The outlandish developer claims dropped my review from 5 to 4 stars. In fact I haven't found any usefulness for this detector at all.

It's the moving time line which sets this EMF detector apart from the others. It makes what ever you're testing more interesting- should a usefulness ever be found.


Supposing that I might be the victim of electronic harassment/RNM, including phase-array for behavior modification, sweeping my studio was very informative; Imagine my surprise when I found that the beams were voice and morse-code modulated! As with other similar devices, holding the unit close to metal or the body(especially fillings) affects the operation, as does wifi.

EMF Detector
View in iTunes
  • $0.99
  • Category: Utilities
  • Updated:
  • Version: 1.20
  • Size: 0.3 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 3.0 or later. Compatible with iPhone 3GS, iPhone 4, iPhone 4s, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, and iPad.

Customer Ratings

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