Comparison

EMF Field Detector RF Scanner vs µMagnetometer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EMF Field Detector RF Scanner

Detect electromagnetic fields (EMF) using your device's sensors. Get alerted to high magnetic fields and potential radiation sources in your home. Useful for identifying hidden emitters and understanding your environment.

Highlights
  • Detects electromagnetic fields (EMF)
  • Warns of high magnetic fields with beeps
  • Measures magnetic force on three axes
  • Records readings with time and date stamps
  • Stores up to 100 records
  • Sends measurements via email
Read full description

Turn your iPhone into a powerful EMF detector and magnetic field scanner. Detect electromagnetic fields (EMF) around you instantly using the built-in sensor already inside your device — no expensive equipment required. Whether you want to monitor electromagnetic radiation in your home, locate hidden magnetic sources, or even explore paranormal activity, this app gives you a simple and exciting way to measure the invisible world around you. Use the app to scan bedrooms, walls, electrical appliances, Wi-Fi zones, sockets, microwaves, wireless devices, and more. Discover areas with unusually high magnetic activity and receive an instant warning beep when strong EMF levels are detected. Many users also enjoy using the app during ghost hunts and paranormal investigations, as sudden magnetic fluctuations are often associated with supernatural activity. NEW: Experience EMF detection in Augmented Reality. Visualize electromagnetic fields in Augmented Reality to better understand how EMFs spread throughout your home, office, or workspace. The app allows you to see a figurative representation of magnetic activity around you, helping you identify high-radiation zones and understand how far electromagnetic fields may reach in real-world environments. Explore EMFs in a more immersive and intuitive way by combining real-time detection with AR visualization technology. Transform your iPhone into a digital EMF Meter, Teslameter, or electromagnetic field tester using the internal compass hardware. View live magnetic field readings in real time and monitor changes on all three axes (X, Y, Z). Scientists, engineers, students, teachers, paranormal investigators, and curious explorers use EMF detectors to measure magnetic activity in everyday environments. Why use this app? • Detect high electromagnetic field zones around you • Monitor EMF levels near beds, appliances, or workspaces • Receive warning alerts when strong magnetic radiation is detected • Track and store measurements with time and date stamps • Investigate unusual magnetic fluctuations during ghost hunting sessions • Find metallic objects, pipes, or hidden sources behind walls • Explore the invisible electromagnetic world around you Features: • Real-time EMF and magnetic field detection • Warning beep near strong radiation sources • Measures magnetic force on X, Y, and Z axes • Magnetic readings displayed in microteslas (µT) • Save up to 100 EMF records • Record events with exact date & time • Export and send measurements by email • Easy-to-use digital display interface Electromagnetic radiation may come from electrical wiring, appliances, wireless devices, cordless phones, Wi-Fi equipment, sockets, and other electronic sources in your environment. Tips: For best accuracy, calibrate your iPhone by moving it in a figure-8 motion before use. Important: This app requires an iPhone with compass hardware and will not work on iPod Touch devices. Disclaimer: This app is intended for entertainment and informational purposes only. It uses the iPhone magnetometer sensor to detect magnetic field variations near ferromagnetic objects and electromagnetic sources. Download now and start discovering the hidden electromagnetic activity around you.

About

µMagnetometer

Measures the strength of the magnetic field around you using your device's magnetometer. Requires Location Services to be enabled on iOS. Provides microtesla readings for nearby magnetic fields.

Highlights
  • Measures magnetic field strength
  • Displays readings in microteslas
  • Utilizes device magnetometer
  • Requires Location Services (iOS)
Features
Read full description

µMagnetometer is simple application for measure nearby magnetic field strength. Note: Magnetometer on IOS requires enabled Location Services!

Screenshots

EMF Field Detector RF Scanner4 screens
µMagnetometer3 screens

Verdict

The call

EMF Field Detector RF Scanner and µMagnetometer both sit at 4.5 stars, but that hides the real split: 84% of EMF Field Detector RF Scanner's written reviews are positive against 23% of µMagnetometer's. EMF Field Detector RF Scanner also leads on ratings volume (5.5K vs 67) and update cadence (every 3 weeks vs every 4 months). µMagnetometer's advantage is in-app purchases (none vs 2) and ads (none vs shown). On rating and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

EMF Field Detector RF Scanner costs $4.99 and µMagnetometer $1.99 up front. EMF Field Detector RF Scanner sells 2 one-off in-app purchases. µMagnetometer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for EMF Field Detector RF Scanner against 4.4 for µMagnetometer. That said, the two scores are not equally well evidenced: EMF Field Detector RF Scanner has 5.5K ratings behind it against 67, so its average is the more settled of the two. Written reviews are what separate them: 84% of EMF Field Detector RF Scanner's written reviews are positive against 23% of µMagnetometer's.

UpkeepUpdate frequency

EMF Field Detector RF Scanner ships an update every 3 weeks, µMagnetometer every 4 months. The most recent releases landed on September 24, 2026 and August 29, 2026 respectively.

Scorecard8 real differences · 2 level
EMF Field Detector RF Scanner versus µMagnetometer: the parameters behind the verdict, then further details
ParameterEMF Field Detector RF ScannerµMagnetometer
Price$4.99$1.99 — better
Rating4.5 (5.5K ratings) — better4.4 (67 ratings)
Positive reviews84.1% of reviews — better23.1% of reviews
Number of ratings5.5K — better67
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size56 MB15 MB
Age rating4+4+
DeveloperJorge Gregorio Martin BelloDmytro Hrebeniuk

Customer experience

EMF Field Detector RF Scanner

All ratings5,535 ratings
Positive90.4%
Neutral5.4%
Negative4.2%
Written reviews580 reviews
Positive84.1%
Neutral5.9%
Negative10.0%

µMagnetometer

All ratings67 ratings
Positive85.1%
Neutral7.5%
Negative7.5%
Written reviews13 reviews
Positive23.1%
Neutral0.0%
Negative76.9%

Bugs and requests

EMF Field Detector RF Scanner

Reported bugs

2 issues
  • App freezes or stops working after updates
  • Readings not always accurate or reliable

Requested features

3 requests
  • Ability to export data
  • More detailed explanations and guidance
  • Compatibility with other EMF measurement devices

µMagnetometer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

EMF Field Detector RF Scanner

One-time2
  • Premium Pack$4.99
  • Special Offer$4.99
None

µMagnetometer

No in-app purchases

Questions

Is EMF Field Detector RF Scanner free?
EMF Field Detector RF Scanner costs $4.99, and also offers in-app purchases.
Is µMagnetometer free?
µMagnetometer costs $1.99, with no in-app purchases.
Which has better reviews, EMF Field Detector RF Scanner or µMagnetometer?
EMF Field Detector RF Scanner is rated higher. EMF Field Detector RF Scanner averages 4.5 out of 5 from 5.5K ratings, while µMagnetometer averages 4.4 from 67 ratings.
Do EMF Field Detector RF Scanner or µMagnetometer have ads?
EMF Field Detector RF Scanner shows ads; µMagnetometer does not.
Which is updated more often, EMF Field Detector RF Scanner or µMagnetometer?
EMF Field Detector RF Scanner ships an update every 3 weeks, and µMagnetometer every 4 months. Most recently, EMF Field Detector RF Scanner was updated on September 24, 2026 and µMagnetometer on August 29, 2026.

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