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Best Magnetic Field Detector Apps

218+ iOS apps curated and reviewed

4.5 avg rating
17 free apps
Updated May 2026

The best magnetic field detector apps on iPhone average 4.5★ across 218+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.

Top Picks for Magnetic Field Detector

EMF & Magnetic Detector#1

EMF & Magnetic Detector by Jose Bello

Detect wires & metal fast
Editor's Choice
🔧 Utilities
4.5😊(305 ratings)
FreeAdsIn-App Purchases
EMF & Magnetic Detector screenshot 1
EMF & Magnetic Detector screenshot 2
EMF & Magnetic Detector screenshot 3
EMF & Magnetic Detector screenshot 4
EMF & Magnetic Detector screenshot 5
EMF & Magnetic Detector screenshot 6

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.

What We Love

  • ⭐ Accurate magnetic detection
  • 👍 Easy to use and intuitive
  • 🔍 Helpful for finding hidden metal objects
  • 🔧 Useful for troubleshooting mechanical issues (e.g., magnetized watches)

Room to Improve

  • 💰 Ads can be intrusive in free version
  • 🔒 Concerns about privacy and data collection
  • 🔋 Potential impact on device battery life
EMF Radiation Detector Reader#2

EMF Radiation Detector Reader by Rounding Squares BV

Detect EMF Radiation Meter
Strong Contender
🔧 Utilities
4.5😐(4.5K ratings)
FreeAdsIn-App Purchases
EMF Radiation Detector Reader screenshot 1
EMF Radiation Detector Reader screenshot 2
EMF Radiation Detector Reader screenshot 3

Detect electromagnetic fields (EMF) around you using your phone's sensors. Identify high-radiation zones in your home and workplace to better organize your environment and potentially improve well-being. Measure EMF emitted by various electronic devices and appliances.

What We Love

  • 👍 Works well around microwave
  • 👍 Consistent results
  • 👍 Useful tool for detecting EMF
  • 👍 Legit EMF detection

Room to Improve

  • 🐛 Ads cover reading numbers
  • 🔍 Unclear how to interpret readings
  • ⚠️ Questionable accuracy, only detects magnets
Physics Toolbox Sensor Suite#3

Physics Toolbox Sensor Suite by Chrystian Vieyra

Sensor Data Visualization Tool
Worth Considering
🔧 Utilities
4.7(1.7K ratings)
FreeIn-App Purchases
Physics Toolbox Sensor Suite screenshot 1
Physics Toolbox Sensor Suite screenshot 2
Physics Toolbox Sensor Suite screenshot 3
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Physics Toolbox Sensor Suite screenshot 6

This app turns your smartphone into a scientific instrument suite, enabling measurement, recording, analysis, and export of real-time sensor data. It offers tools for kinematics, acoustics, light, magnetism, and more, suitable for students, educators, researchers, and hobbyists.

More Magnetic Field Detector apps to explore

4
Metal Detector EMF
Metal Detector EMF
Metal Detector EMF
Find metals and magnetic field
Free

This application uses your smartphone's magnetic sensor to detect nearby metal objects. It can help you find hidden metallic items, act as a treasure hunting tool, or even assist in ghost hunting by visualizing magnetic field trends. Requires a device with a magnetic sensor to function.

Detects nearby metalMeasures magnetic fieldFinds hidden metallic objects
🔧 Utilities
(2.2K)
free with in-app purchases
5
Physics Toolbox Magnetometer
Physics Toolbox Magnetometer
Physics Toolbox Magnetometer
Real-Time Field Strength Meter
Free

This app transforms your iPhone into a precise scientific instrument for measuring, visualizing, and recording magnetic fields. Explore magnetic field vectors, magnitudes, and compass headings with real-time charts and digital readouts. Ideal for educational experiments, lab work, or curious exploration.

Real-time magnetic field vector and magnitude displayChart, digital, and compass viewing modesData recording and CSV export
📚 Education
(6)
free
6
Magnetic Field Metal Detector
Magnetic Field Metal Detector
Magnetic Field Metal Detector
Find Metal & Detect EMF
Free

This utility app uses your device's magnetometer to measure magnetic fields, detect EMF, and visualize magnetic data in real-time. It can help identify magnetic metal objects by sensing disturbances in the surrounding magnetic field and offers customizable alerts.

Magnetic field strength measurementEMF detectionReal-time XYZ magnetic sensor data
🔧 Utilities
(1)
free with in-app purchases
7
Tesla - Metal detector and Magnetic field recorder
Tesla - Metal detector and Magnetic field recorder
Tesla - Metal detector and Magnetic field recorder
by Exelerus AB
Free

Transform your device into a metal detector and magnetic field scanner. Measure, record, and analyze electromagnetic fields and metallic objects in real-time or over extended periods. Includes simulated mode for devices without a magnetometer.

Detect metallic objects and EMFReal-time magnetometer measurementsAutomated long-time recording
🔧 Utilities
(118)
free with in-app purchases
8
Magnetic Field Scanner
Magnetic Field Scanner
Magnetic Field Scanner
Detect Hidden Devices Nearby
Free

This utility app uses your phone's magnetometer to detect unusual magnetic field spikes, which may indicate the presence of hidden electronic devices. It provides real-time alerts, visual graphs, and customizable sensitivity to help you scan your surroundings for potential privacy threats.

Real-time magnetic field scanningHidden device alerts with adjustable sensitivityLive visual graph of magnetic signals
🔧 Utilities
(7)
free with in-app purchases
9
Metal Detector and Spy Camera
Metal Detector and Spy Camera
Metal Detector and Spy Camera
Cam Device and Stud Finder
Free

This app acts as a versatile detection toolkit, helping you find hidden metal objects, magnetic fields, and potential spy cameras. It also includes tools to check your WiFi network for unknown devices and scan your email for data breaches, enhancing your safety and aiding home improvement projects.

Metal detectorMagnetic field detectorWiFi device scanner
🔧 Utilities
(10K)
subscription
10
Metal Detector – Magnet Finder
Metal Detector – Magnet Finder
Metal Detector – Magnet Finder
Find Metals with Your Phone
Free

This tool uses your phone's magnetic sensor to detect metal objects and measure magnetic field strength. It provides real-time readings, visual and audio alerts for increased fields, and a history graph to track changes.

Real-time magnetic field measurementAccurate metal detectionDial interface with instant response
🔧 Utilities
(5)
free with in-app purchases
11
Suspicious Device Cam Detector
Suspicious Device Cam Detector
Suspicious Device Cam Detector
WiFi & Bluetooth Bug Detection
Free

Detect hidden or unrecognized devices in unfamiliar environments like hotels or rentals. Scan for unauthorized Bluetooth and Wi-Fi connections, and use an infrared camera filter to find electronics in dark areas. Track network changes and save scan history for peace of mind.

Bluetooth and Wi-Fi scanningInfrared camera filterNetwork status monitoring
🔧 Utilities
(24)
free with in-app purchases
12
EMF Field Detector RF Scanner
EMF Field Detector RF Scanner
EMF Field Detector RF Scanner
Find Wave & Hidden Emitters
$4.99

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.

Detects electromagnetic fields (EMF)Warns of high magnetic fields with beepsMeasures magnetic force on three axes
🔧 Utilities
(5.5K)
free with in-app purchases
13
Emf Detector Radiation Reader
Emf Detector Radiation Reader
Emf Detector Radiation Reader
Detect hidden magnetic field
$4.99

Detect and track magnetic fields and potential EMF sources around you. Receive warnings for high readings and access guidelines for safe exposure levels. Monitor your environment and protect your health.

Track magnetic fields and high readingsDetects ferromagnetic metalsElectrosmog (EMP) detector
🔧 Utilities
(1.3K)
free with in-app purchases
14
Metal Detector - Gauss Meter
Metal Detector - Gauss Meter
Metal Detector - Gauss Meter
Magnetic field recorder
Free

This utility app transforms your iPhone into a metal detector using its built-in magnetometer. It measures magnetic fields to help you locate ferromagnetic objects like keys, coins, and electronics.

Measure magnetic fieldDetect coins and metalLocate metal objects
🔧 Utilities
(1)
free with in-app purchases
15
Metal Detector & Stud Finder +
Metal Detector & Stud Finder +
Metal Detector & Stud Finder +
EMF & Magnetic Field Meter
Free

This application utilizes your smartphone's magnetic sensor to detect nearby metal objects by measuring magnetic field values. It displays readings in microtesla (μT) and can help locate hidden metallic items. Please note it cannot detect non-ferrous metals like silver, gold, or copper.

Detects hidden metal objectsMeasures magnetic field valueDisplays magnetic field level in μT
🔧 Utilities
(307)
free with in-app purchases
16
Magnetometer
Magnetometer
Magnetometer
Easy-to-use metal detector
$0.99

This application uses your iPhone's compass to detect electromagnetic interference, helping you find metal objects or magnets. It's designed for fun and experimental purposes, not as a professional tool. Discover hidden metal items or simply explore the magnetic fields around you.

Detects metal and magnetsUses iPhone's compassMeasures EMF interference
🔧 Utilities
(8)
paid
17
Device Detector: Find & Detect
Device Detector: Find & Detect
Device Detector: Find & Detect
Network Scanner, WiFi Analyzer
Free

Analyze your surroundings and detect unusual devices with smart scanning tools. Protect your personal space by checking Wi-Fi networks, nearby Bluetooth devices, and magnetic field variations. Get simple guides to enhance your privacy and awareness wherever you go.

Wi-Fi network scannerBluetooth device finderMagnetic field meter
🔧 Utilities
(142)
free with in-app purchases
18
Detector Device: Find Analyzer
Detector Device: Find Analyzer
Detector Device: Find Analyzer
Network WiFi Scanner Signal
Free

This app helps protect your privacy by scanning your environment for hidden threats. It offers advanced technology to detect potential security risks, giving you confidence and control over your digital surroundings.

Privacy protectionDetect hidden threatsScan environment
🔧 Utilities
(87)
free with in-app purchases
19
EMFMeter : Radiation Reader
EMFMeter : Radiation Reader
EMFMeter : Radiation Reader
Detect electromagnetic field
Free

This tool transforms your smartphone into a real-time electromagnetic field scanner. It visualizes EMF readings, detects studs and metal objects behind walls, and alerts you to high EMF levels. You can also track EMF source direction and export data for analysis.

Real-time EMF detectionElectromagnetic field visualizationBuilt-in stud finder
🔧 Utilities
(93)
free with in-app purchases
20
The Metal Detector
The Metal Detector
The Metal Detector
detects nearby magnetic fields
Free

This utility app leverages your iPhone's magnetic sensor to detect nearby magnetic fields. It offers a simple interface with visual feedback and readings, providing a tool for exploring magnetic phenomena around you.

Detects magnetic fieldsUses iPhone's magnetic sensorSimple user interface
🔧 Utilities
(7)
free