EMF Sensor

4.2
190 reviews
10K+
Downloads
Content rating
Everyone
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About this app

Use the magnetic field sensor on your phone to take EMF readings. Works like a 3 axis EMF meter. Displays EMF in milli Gauss (mG) or micro Tesla (uT). This data can be displayed on a customizable graph with optional auto ranging capability. EVP function now included that allows live audio graphing and recording. Uses include ghost hunting, paranormal research, finding sources of EMF radiation, monitoring EMF levels, and/or curiosity.

Instructions for use:
Preferences can be found by pressing the menu button. Many display options are available to customize what is on the screen.
The range on the meter can be changed in the options or by sliding your finger up or down on the screen. The left side of the screen adjusts the minimum, the right side adjusts the maximum. You can lock or unlock touch adjustments through the menu.
Auto Range Mode can be selected to affect the graph range, the graph and the UI range, or neither. It is suggested to select "Graph and Interface" to have fully automated range control.
Baseline Mode lets you set a baseline value that will be subtracted from the reading.
Custom color values can be set for the text and graph line. Sound can be enabled and customized in preferences, default is off. This will play a tone at a rate determined by the EMF reading, similar to a Geiger counter.
EVP Function:
Live audio data can be graphed and recorded. Once recorded, audio can be graphed and cut into clips and exported.
More detailed Instructions are available from the menu within the app.

This app was designed to be lightweight, fast, and free of gimmicks. Please email any questions, comments, concerns, or ideas. If you have any problems, please use email as this is the only way I will know how to reach you.
Updated on
Feb 7, 2017

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
No information available
4.2
190 reviews
Chuck Fresh
February 2, 2021
Detects mG quite well on many smartphones including my Samsung S21 Ultra. Our team at The Underpresence attempted to calibrate this app with a traditional EMF device. Although the actual measurements were not spot on, strong variations in magnetic fields were immediately and accurately detected with both devices. If you're using this app for paranormal research, that's exactly what you're looking for. There is no preset milligauss or microtesla reading that indicates activity - you're looking for unexplained peaks or changes. If you happen to slide your finger along the left or right side, you may affect the size and sensitivity of the display and icons. Read the instructions if you find this happening - it's an easy fix.
1 person found this review helpful
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Rob Craig
July 23, 2022
EVP Doesn't work for my Galaxy S22+ idk if its my phone or the app but it doesn't work /Emf Sensor Range seems to work best at 0-2500mG w. Number of Data Points set to: (100).
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A Google user
August 19, 2019
Yes!! Affordable, simple, true, well made, no adds. Thanks for this great product, sad it's lost in a sea of cheap and fake apps!!!
6 people found this review helpful
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What's new

added privacy policy as required for microphone use