Comparison

Magnetic Detector, Stud Finder 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

Magnetic Detector, Stud Finder

This app uses your device's magnetometer to detect magnetic and electromagnetic fields. It helps locate metal objects, hidden wires, pipes, and even wood studs behind walls. Get real-time readings and alerts to explore your surroundings.

Highlights
  • Detects magnetic and EMF fields
  • Locates metal objects, wires, and pipes
  • Finds hidden wood studs behind walls
  • Real-time magnetic field intensity readings (μT & mG)
  • Active detection beep alerts
  • Automatic storage of time and measurements
Features
Read full description

Turn your iPhone into a powerful Magnetic Detector and Metal Detector. Detect nearby magnetic fields, find hidden metal screws and nails, scan walls for magnetic objects, and measure EMF magnetic field activity in real time using your device's built-in magnetometer. Whether you're searching for metal fasteners behind walls, exploring magnetic sources, or measuring magnetic field strength, Magnetic Detector makes it easy to visualize changes in your surroundings. Magnetic Detector is handy for comparing readings around appliances, walls, and everyday objects. When used as a Metal Detector, it can help you spot nearby iron or steel items by showing changes in the magnetic field. FIND HIDDEN METAL OBJECTS Use your iPhone as a magnetic metal detector to help locate ferromagnetic objects such as iron and steel screws, nails, certain pipes, metal fittings, and other magnetic materials. Move your device slowly along walls or plasterboard to detect magnetic disturbances. Metal fasteners may help indicate the location of hidden wall studs. DETECT & MEASURE MAGNETIC FIELDS Transform your device into a real-time EMF magnetic field meter. Monitor magnetic field intensity with an intuitive digital gauge and observe how measurements change as you approach magnetic objects. The app displays magnetic field strength in: - μT (microtesla) - mG (milligauss) Earth's magnetic field is typically 25–65 μT. 1 μT equals 10 mG. POWERFUL DETECTION FEATURES - Real-time magnetic field and EMF magnetic field measurements. - Magnetic metal detection using your device's built-in magnetometer. - Interactive gauge displaying magnetic field intensity. - Audible warning when the magnetic field exceeds the configured threshold. - Automatic recording of measurements and timestamps. - Three-axis magnetic field readings (Bx, By, Bz). - 3D visualization of magnetic field measurements. - Room scanning to explore magnetic hotspots. - Support for microtesla and milligauss measurements. USE YOUR IPHONE AS A STUD FINDER Searching for hidden screws or nails in a wall? Magnetic Detector can help identify nearby ferromagnetic fasteners that may indicate the position of wooden studs or metal structures. IDEAL FOR DIY, EDUCATION & EXPLORATION Magnetic Detector can be useful for: - DIY enthusiasts and handymen exploring walls for magnetic fasteners. - Students conducting physics experiments and school projects. - Teachers demonstrating magnetic field behavior. - Engineers and technology enthusiasts studying magnetic measurements. - Anyone curious about magnetic activity around electronic devices, speakers, magnets, and other objects. HOW DOES IT WORK? The app uses the magnetometer integrated into your iPhone to measure nearby magnetic field strength. Ferromagnetic objects can produce or disturb local magnetic fields. As you move your device closer to these objects, the magnetic field readings may change, helping you identify potential magnetic sources. Tip: Shake your device to help recalibrate the magnetic sensor. Keep your phone away from magnetic accessories that could interfere with measurements. IMPORTANT INFORMATION Magnetic Detector is designed for personal, educational, and entertainment purposes. It is not a replacement for professional metal detectors, stud finders, electrical wire detectors, or safety equipment. Detection is primarily limited to nearby magnetic and ferromagnetic materials. The app cannot directly detect wooden studs, non-magnetic metals such as copper or aluminum, or reliably identify electrical wiring. Always verify wall conditions with appropriate professional tools before drilling. Accuracy depends on your device, distance, and magnetic interference. If you experience any issues or have suggestions, please contact us and include your device model and iOS version. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

EMF Detector

Transform your iPhone into an EMF detector to monitor electromagnetic fields. Identify radiation levels in various environments to assess safety at home, work, or in public spaces. Gain insights to make informed decisions about your surroundings.

Highlights
  • EMF monitoring
  • Electromagnetic field detection
  • Radiation level measurement
  • Environmental safety assessment
  • Real-time EMF readings
Features
Read full description

Monitor your surroundings with precision using our EMF Monitoring app, designed exclusively for iOS. This innovative application transforms your iPhone into a powerful EMF detector, enabling you to identify electromagnetic fields in various environments. As you move through different areas, the app continuously measures EMF levels, allowing you to easily pinpoint zones of high and low radiation. Whether you're concerned about safety at home, in the workplace, or in public areas, EMF Monitoring provides the insights you need to assess environmental safety and make informed decisions about your surroundings. This app is using the standard Apple Terms of Use (EULA) https://www.apple.com/legal/ internet-services/itunes/dev/stdeula/

Screenshots

Magnetic Detector, Stud Finder4 screens
EMF Detector3 screens

Verdict

The call

The clearest difference is review sentiment: Magnetic Detector, Stud Finder at 90% against EMF Detector's 25%. Magnetic Detector, Stud Finder also leads on rating (4.6 vs 4.4). EMF Detector's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price, ratings volume, in-app purchases and monetization model 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. Magnetic Detector, Stud Finder sells 4 in-app purchases, starting at $4.99 per 7 days and EMF Detector sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Magnetic Detector, Stud Finder holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 443 and 339 respectively. Written reviews point the same way: 90% of Magnetic Detector, Stud Finder's written reviews are positive against 25% of EMF Detector's.

UpkeepUpdate frequency

Magnetic Detector, Stud Finder ships an update every 2 months, EMF Detector every 2 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Magnetic Detector, Stud Finder versus EMF Detector: the parameters behind the verdict, then further details
ParameterMagnetic Detector, Stud FinderEMF Detector
PriceFreeFree
Rating4.6 (443 ratings) — better4.4 (339 ratings)
Positive reviews90.2% of reviews — better25.0% of reviews
Number of ratings443 — better339
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size30 MB11 MB
Age rating4+4+
DeveloperJose Bello新雨 李

Customer experience

Magnetic Detector, Stud Finder

All ratings443 ratings
Positive91.9%
Neutral2.5%
Negative5.6%
Written reviews356 reviews
Positive90.2%
Neutral3.7%
Negative6.2%

EMF Detector

All ratings319 ratings
Positive83.4%
Neutral4.1%
Negative12.5%
Written reviews16 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

Bugs and requests

Magnetic Detector, Stud Finder

Reported bugs

2 issues
  • Readings sometimes inconsistent or stop at certain thresholds
  • Compatibility issues with some devices

Requested features

3 requests
  • Add support for measuring electric fields
  • Improve accuracy and sensitivity
  • Provide more detailed readings and analysis

EMF Detector

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Magnetic Detector, Stud Finder

Subscriptions1
  • Weekly Full Access$4.997 Days
One-time3
  • Remove Ads - Magnetic Detector$2.99
  • Unlock all - Premium & Warning Beep$4.99
  • Lifetime Full Access$12.99
2 purchases

EMF Detector

Subscriptions1
  • unlimited features2 variants$4.991 Month
One-time1
  • unlimited features$14.99

Questions

Is Magnetic Detector, Stud Finder free?
Magnetic Detector, Stud Finder is free to download, with in-app purchases available.
Is EMF Detector free?
EMF Detector is free to download, with in-app purchases available.
Which has better reviews, Magnetic Detector, Stud Finder or EMF Detector?
Magnetic Detector, Stud Finder is rated higher. Magnetic Detector, Stud Finder averages 4.6 out of 5 from 443 ratings, while EMF Detector averages 4.4 from 339 ratings.
Do Magnetic Detector, Stud Finder or EMF Detector have ads?
Magnetic Detector, Stud Finder shows ads; EMF Detector does not.
Which is updated more often, Magnetic Detector, Stud Finder or EMF Detector?
Magnetic Detector, Stud Finder ships an update every 2 months, and EMF Detector every 2 weeks. Most recently, Magnetic Detector, Stud Finder was updated on October 29, 2026 and EMF Detector on October 24, 2026.

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