This application measures the magnitude of the magnetic field. The Tesla Meter will respond to a static magnetic field as well as the magnetic field radiated through the application of alternating current.

The research on the adverse biological affects in the presence of magnetic fields, weather static or alternating, is inconclusive, so it's best to practice prudent avoidance. Low level magnetic fields are naturally generated by the Earth. Higher level magnetic fields are generated from microwave ovens as well as the clock radio next to your bedside.

Use this Tesla Meter to make a qualitative assessment of the strength of magnetic field exposure.

What's New

Version 3.20

Enhanced to leverage new capabilities of iOS 8, iPhone 6 and iPhone 6+.

Ratings and Reviews

3.3 out of 5

7 Ratings

7 Ratings

Very good app


Out of many magnetic field apps I use this one because the feature of being able to select AC in effect removes the earth's static field and permits just seeing the effects of AC fields, mainly ELF EMF I think. Great! Users should be aware that on AC if the sensor is moved about, the reading briefly jumps due to moving the sensor within the earth's field. No problem if you know why. Good app, developer responded quickly to questions.

Very easy to use

Narciss Greene

You can pick AC or DC and change units of measurement all on one screen. There's also a time graph associated with it.

Best of 4 emf apps!


Of emf detector, radiation detector, metal/emf detector, it is the most simple to use and is quick to understand. I was not forced to rate it.


Michael Harsh
3 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© JMS Solutions, LLC


  • Family Sharing

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

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