What EMF Meter measures
- The total magnetic field, in µT (or mG, G)
- The variation from your ambient reference
- The maximum and peaks of a session
- The sensor's actually observed rate
MAGNETIC FIELD METER
EMF METER
EMF METERSee what your phone feels.
EMF Meter reads your phone's magnetometer, shows the total field in µT and lights five LEDs according to how much the field changes around you. Real measurements: nothing is simulated.
Three moves
Calibrate
Move the phone away from sources and keep it still for a few seconds: the app sets an ambient reference, with a stability check.
Sweep
Bring the phone close to an object. The LEDs light up according to how the field varies from your reference.
Keep a record
Start a session: duration, maximum and peaks are tracked. With Premium, the history comes with charts.
Five LEDs, one reading
From green to red, the LEDs show the relative intensity of the variation, with smooth and stable behaviour. The total field in µT and the variation appear on the same screen.
- Very low
- Low
- Medium
- High
- Very high
Find, compare, understand
Magnets, speakers, motors
Bring the phone close: the LEDs react to how the field varies around the object.
Magnetic cases and mounts
Check the effect of a case, a mount or an accessory on the field.
Compare places
Compare the magnetic field from room to room, with the same reference method.
Metal objects
A metal object can disturb the local field: EMF Meter shows the variation, without promising to detect everything.
Experiments and teaching
Simple demonstrations about the Earth's magnetic field, in class or at home.
Curiosity and investigation
Many investigators carry an EMF meter. EMF Meter shows real variations and leaves the interpretation to you: it does not detect ghosts.
Real measurements, no magic promises
What it does not do
- Measure electric fields
- Measure Wi-Fi, 5G or 50/60 Hz like a dedicated instrument
- Detect ghosts or spirits: nothing has ever proven it
- Replace a certified instrument: no medical or safety advice
Accuracy depends on your phone's sensor, and magnetic cases, metal objects and speakers can affect readings.
Set it up your way
µT, mG or G
Choose the display unit.
Sensitivity and smoothing
Three sensitivity modes and adjustable smoothing.
Optional alerts
Vibration and sounds, only when a real threshold is crossed.
Screen on
To keep the display on during a session.
Flashlight
A shortcut to light the area you are measuring.
Offline
Measuring, calibration and display work with no network.
Free to measure, Premium to keep a record
Free
- 5 LEDs, total field and variation
- Calibration with stability check
- Sounds and vibration
- Temporary session: duration, maximum, peaks
- 3 sensitivity modes
Premium, one-time purchase
- Session history with charts
- Personal notes and session names
- CSV export
- Fine sensitivity settings
- Detector skins and sound packs
No subscription. An optional tip supports development; it unlocks nothing.
Your measurements stay with you
No location, camera or microphone
The app does not access them.
No account
Nothing to create, nothing to sign in to.
Local data
Your sessions stay on your phone.
Offline
Measuring depends on no server.
EMF Meter, the magnetic field meter that uses your phone's magnetometer
EMF Meter turns your Android phone into a magnetic field detector. The app reads the built-in magnetometer, shows the total field in microtesla (µT, but also mG or G) and lights five LEDs, from green to red, according to the variation from an ambient reference you calibrate in one tap. Values come straight from the sensor: nothing is simulated.
It is used to find a magnet, a speaker or a motor, check a magnetic case or mount, compare the field between rooms, or run experiments on the Earth's magnetic field. Sessions track duration, maximum and peaks, with optional vibration and sound alerts, only when a real threshold is crossed. A shortcut turns on the flashlight, and the app works offline.
EMF Meter is an indicative, uncertified tool: it only measures variations of the magnetic field, not electric fields or Wi-Fi, and it does not detect ghosts. It is free to measure; a one-time Premium purchase adds history with charts, notes, CSV export, fine sensitivity settings, skins and sound packs.
EMF Meter frequently asked questions
What does EMF Meter measure?
The total magnetic field, in µT (or mG, G), using your phone's magnetometer, and its variation from an ambient reference you calibrate. Five LEDs, from green to red, show the relative intensity of that variation.
Is my phone compatible?
It must have a magnetometer, which most Android phones do. Without a sensor, the app shows a status screen and no fake readings.
Does EMF Meter measure Wi-Fi, 5G or 50/60 Hz?
No. It only measures variations of the magnetic field: not electric fields, not Wi-Fi, not 5G, and not 50/60 Hz the way a dedicated instrument would. It is an indicative, uncertified tool that gives no medical or safety advice.
Can EMF Meter detect ghosts?
No. Some investigators believe that spirits disturb magnetic fields, but this has never been scientifically proven: such variations usually come from wiring, appliances, speakers, magnets or phone movement. EMF Meter shows real variations, unmodified, and leaves the interpretation to you.
How do I calibrate the app, and what do the LEDs mean?
Move the phone away from metal objects, remove any magnetic case and keep it still for a few seconds: the app sets the ambient reference after a stability check. The five LEDs, from green to red, then show the relative intensity of the variation.
What does the free version include, and what does Premium unlock?
The free version offers the 5 LEDs, calibration, sounds and vibration, a temporary session and 3 sensitivity modes. Premium, a one-time purchase with no subscription, adds history with charts, notes, CSV export, fine sensitivity settings, skins and sound packs.
Are my measurements sent anywhere?
No. There is no account: your measurements and sessions stay on your phone, and the app does not access location, camera or microphone.
Where can I download EMF Meter?
EMF Meter is available on Google Play, in English and French: the download button is at the top of this page. The app works with no account and offline.