Comparison

EMF Detector (Scanner) vs EMF Scan

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)

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 Scan

Features
Read full description

Measure electromagnetic fields (EMF) in real time using your smartphone's built-in magnetic sensor. [Key Features] • Real-time magnetic field strength display (switch between µT / mG) • Automatic saving of measurement data and history management • Map view of measurement locations • Sound alarm (volume changes with field strength) • Color themes (11 in total — dark and light pastel) • Ad-removal option (one-time purchase; also unlocks some color themes) [Great For] • Anyone concerned about magnetic fields around home appliances or power lines • Anyone who wants an easy alternative to a dedicated EMF meter • Anyone who wants to record and manage measurement data * This app uses your smartphone's magnetic sensor. Its accuracy differs from that of a dedicated measuring instrument.

Screenshots

EMF Detector (Scanner)4 screens
EMF Scan4 screens

Verdict

The call

The clearest difference is device support: EMF Scan at 3 against EMF Detector (Scanner)'s 1. EMF Scan also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and in-app purchases 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 and EMF Scan sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 22, 2026 and September 29, 2026 respectively.

Scorecard2 real differences · 4 level
EMF Detector (Scanner) versus EMF Scan: the parameters behind the verdict, then further details
ParameterEMF Detector (Scanner)EMF Scan
PriceFreeFree
Update frequencyWeeklyWeekly
AdsYesYes
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size6 MB29 MB
Age rating+44+
DeveloperJongMin LeeYasuhiro Kodama

In-app purchases

2 purchases

EMF Detector (Scanner)

One-time2
  • 1 Month Premium Pass$0.99
  • 1 Year Premium Pass$2.99
1 purchases

EMF Scan

One-time1
  • 広告を削除$0.99

Questions

Is EMF Detector (Scanner) free?
EMF Detector (Scanner) is free to download, with in-app purchases available.
Is EMF Scan free?
EMF Scan is free to download, with in-app purchases available.
Do EMF Detector (Scanner) or EMF Scan have ads?
Both EMF Detector (Scanner) and EMF Scan show ads.
Which is updated more often, EMF Detector (Scanner) or EMF Scan?
EMF Detector (Scanner) ships an update weekly, and EMF Scan weekly. Most recently, EMF Detector (Scanner) was updated on September 22, 2026 and EMF Scan on September 29, 2026.

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