Comparison

EMF Detector (Scanner) vs EMF Detector

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

Head to head
About

EMF Detector (Scanner)

Visualize electromagnetic field activity using your device's magnetometer. Monitor real-time changes with clear graphs and history logs. Useful for checking electronics and exploring magnetic environments.

Highlights
  • Real-time EMF meter
  • Live waveform and graph views
  • FFT frequency analysis
  • Signal change detection
  • Measurement history
  • Export options (PDF, video)
  • Interactive sound effects
Features
Read full description

EMF Detector helps you visualize Electromagnetic Field (EMF) activity around you using your iPhone’s built-in magnetometer. Whether you are checking electronics, exploring your environment, or tracking unusual magnetic changes, EMF Detector provides a clear and easy-to-read real-time experience. KEY FEATURES • Real-time EMF meter with smooth, responsive updates • Live waveform and graph views for continuous monitoring • FFT view to inspect frequency components of signal changes • Signal change detection to catch sudden spikes and drops • Measurement history so you can review previous sessions • Export options (such as PDF and video capture) for sharing and reporting • Sound effects and feedback options for interactive monitoring • Clean, intuitive interface designed for quick readings USE CASES • Scan around household electronics • Compare magnetic activity in different rooms • Observe signal behavior near cables, adapters, and devices • Record and share findings for personal reference IMPORTANT NOTES • This app is for general informational and educational use. • Because this app uses your phone’s built-in sensors, readings may vary depending on your device specifications, device condition, and surrounding environment; use all measurements for reference only. Upgrade options may be available for additional features and an enhanced experience.

About

EMF Detector

This app uses your phone's magnetometer to measure and display magnetic fields. It offers standard readings with safety levels and a paranormal mode for ghost hunting. You can track measurements over time, export data, and explore sources of EMF.

Highlights
  • Live magnetic field gauge
  • Standard and paranormal measurement modes
  • Source finding tool
  • Measurement history and trends
  • CSV data export
  • Spirit Box feature for entertainment
Features
Read full description

EMF Detector reads your phone's magnetometer and shows the magnetic field around you in µT or mG: on a live gauge, as separate X, Y and Z axes, and over the last 24 hours. START IN ONE TAP Tap the gauge, or the green START button under it. The app first separates the phone's own magnetism from the field around you. While it says "Calibrating…", turn the phone slowly in a figure-8 for a few seconds; the live reading then appears and stays steadier while you tilt the phone. A short vibration confirms every start and stop. TWO WAYS TO MEASURE • Standard: a radial gauge with plain-language levels from "No EMF detected" upward. In Settings you can switch it to a Safety view that labels a reading as background, weak field, wiring detected or live wire (an estimate from field strength, not proof of a wire) and sets it against ICNIRP reference levels for the general public or for workers. • Paranormal: records a quiet baseline first, then rates each spike against it on a five-step scale and marks it on a session timeline. FIND THE SOURCE The Source tab turns the reading into a warmer / colder hunt. Move the phone slowly around the room; the indicator shows whether the reading is rising or falling, and the X/Y/Z bars show the sensor's value on each axis. KEEP A RECORD • Measurement sessions are saved with their minimum, average and maximum • A 7-day trend with insights, such as how a reading compares with your usual level • Notes and favorites for each reading, plus a side-by-side compare view • CSV export of your history, and share-as-image for the current reading • A 24-hour exposure chart on the main screen • Peak hold, and "Zero here" to re-learn the baseline in a new spot • Calibration offset, µT or mG units, and a choice of reference levels TIPS FOR A GOOD READING 1. Start away from speakers, magnetic cases and car mounts, and do the figure-8 until the number appears. 2. Hold the phone flat and sweep slowly, a few centimetres from the wall or appliance. 3. Watch for a rise against your starting level rather than one absolute number. 4. Tap "Zero here" when you move to a new room so the baseline is re-learned there. FOR GHOST-HUNTING NIGHTS Spirit Box turns the live field into pulses, vibration and spoken words. It is entertainment: field spikes come from wiring, motors, magnets and the phone itself, and no spirits are detected. A Halloween theme can be switched on in Settings. HONEST TECH NOTE A phone magnetometer measures static and slowly changing magnetic fields: steel, magnets, motors, transformers and wiring under load. It samples about ten times a second, so it cannot measure 50/60 Hz mains fields accurately, and it cannot detect radio frequency, Wi-Fi, 5G or radiation. It is not a certified safety instrument; use it to explore and compare readings around your home. Made for curious people comparing readings around appliances and from room to room, and for paranormal investigators.

Screenshots

EMF Detector (Scanner)4 screens
EMF Detector3 screens

Verdict

The call

The clearest difference is rating: EMF Detector at 3.9 against EMF Detector (Scanner)'s 1.0. EMF Detector also leads on in-app purchases (none vs 2) and ratings volume (9 vs 1). On price, update cadence, ads 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

Both are free to download. EMF Detector (Scanner) sells 2 one-off in-app purchases. EMF Detector asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

EMF Detector holds the better App Store score, 3.9 against 1.0. That said, the two scores are not equally well evidenced: EMF Detector has 9 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
EMF Detector (Scanner) versus EMF Detector: the parameters behind the verdict, then further details
ParameterEMF Detector (Scanner)EMF Detector
PriceFreeFree
Rating1.0 (1 ratings)3.9 (9 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings19 — better
Update frequencyWeeklyWeekly
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhoneiPhone
Requires iOS17.616.4 — better
Further details — not scored
Size6 MB53 MB
Age rating4+17+
DeveloperJongMin LeeKyu-Hee Jang

Customer experience

EMF Detector (Scanner)

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

EMF Detector

All ratings9 ratings
Positive66.7%
Neutral11.1%
Negative22.2%

In-app purchases

2 purchases

EMF Detector (Scanner)

One-time2
  • 1 Month Premium Pass$0.99
  • 1 Year Premium Pass$2.99
None

EMF Detector

No in-app purchases

Questions

Is EMF Detector (Scanner) free?
EMF Detector (Scanner) is free to download, with in-app purchases available.
Is EMF Detector free?
EMF Detector is free to download, with no in-app purchases.
Which has better reviews, EMF Detector (Scanner) or EMF Detector?
EMF Detector is rated higher. EMF Detector (Scanner) averages 1.0 out of 5 from 1 ratings, while EMF Detector averages 3.9 from 9 ratings.
Do EMF Detector (Scanner) or EMF Detector have ads?
Both EMF Detector (Scanner) and EMF Detector show ads.
Which is updated more often, EMF Detector (Scanner) or EMF Detector?
EMF Detector (Scanner) ships an update weekly, and EMF Detector weekly. Most recently, EMF Detector (Scanner) was updated on October 28, 2026 and EMF Detector on October 31, 2026.

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