# EMF & Magnetic Detector — Detect wires & metal fast

> Detects magnetic and EMF fields using your device's magnetometer. (iPhone/iPad app by Jose Bello.)

- Source: https://appshunter.io/ios/app/emf-and-magnetic-detector/id1403751803 (this page in markdown: same URL + `.md`)
- Developer: [Jose Bello](https://appshunter.io/developer/1013437387)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.60/5 from 424 App Store ratings · 339 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 26 MB
- Languages: American English
- Released: 2018-08-01
- Data updated: 2026-08-28
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/emf-and-magnetic-detector/id1403751803/reviews.md

## What is EMF & Magnetic Detector?

Detect magnetic and EMF (electromagnetic) fields with your device. Find metal objects, locate nearby magnetic sources, and explore your surroundings. This app uses the magnetometer to measure the magnetic field when your device is placed near ferromagnetic metal objects like wires, pipes, coins, speakers, phones, metal screws, keys, computers, stereos, and much more!

The Magnetic Detector is an application engineered to quantify the intensity of the magnetic field in close proximity, serving as an indicator of the presence of ferromagnetic materials. This tool capitalizes on the magnetic sensor integrated into mobile devices, delivering readings in units of μT (microteslas). Under standard environmental conditions, the Earth's magnetic field fluctuates around 49μT, equivalent to 490mG (milli gauss), with a conversion ratio of 1μT to 10mG. The proximity of metallic objects will induce a disturbance in the magnetic field, reflecting an increase in intensity readings.

The Magnetic Detector is an effective tool for the identification and localization of metallic objects within a specified area, leveraging the intrinsic property of metals to generate detectable magnetic fields whose magnitude can be precisely measured with this instrument.

Also you can discover magnetic fields and wood studs hidden under walls or plasterboard. As you move the device along the wall, the needle moves and when the limit is reached, it can be heard a warning beep.

The features are:
- Active detection beep when the above limit is reached.
- The time and measure read is stored automatically.
- A gauge indicating the magnitude of the magnetic field in uT and milliGauss.

It could be used for construction workers & handymen:
- to find where in the walls are hidden wires
Students:
- for educational purposes like school projects and experiments

Tip: Shake for calibration
Scientists, Teachers, Students, and Engineers, all use detector Meters for detecting magnetic fields of all types. 

Please note that Metal Detector is not a replacement for professional metal detector devices and it should be used for private/entertainment purposes only.

 If you have any issues to report or suggestions to make, please email the device you’re using and iOS version.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock all - Premium & Warning Beep | $4.99 | one-time |
| Remove Ads - Magnetic Detector | $2.99 | one-time |


## What do users think of EMF & Magnetic Detector?

Overall sentiment: positive

**Pros**

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

**Cons**

- 💰 Ads can be intrusive in free version
- 🔒 Concerns about privacy and data collection
- 🔋 Potential impact on device battery life

**Commonly reported bugs**

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

**Most requested features**

- Add support for measuring electric fields
- Improve accuracy and sensitivity
- Provide more detailed readings and analysis

## Recent user reviews (10 of 339)

All indexed reviews: https://appshunter.io/ios/app/emf-and-magnetic-detector/id1403751803/reviews.md

### 5/5 — Good app

*2026-08-23*

Great app found the right position for my GPS antenna (magnetic)

### 4/5 — Good for finding wires

*2026-08-20, version 4.9*

Very helpful for finding wires in walls when putting up pictures

### 5/5 — Amazing

*2026-08-19, version 4.9*

Sick love it

### 5/5 — Great app

*2026-08-18*

Detects metal

### 2/5 — Bof

*2026-08-18*

Pas convaincu

### 5/5 — Absolutely Fantastic!

*2026-08-13, version 4.9*

Does everything I wanted and then more.  Affordable and easy to use. Very informative!

### 5/5 — Excellent

*2026-08-12*

Very responsive and alive testing.

### 5/5 — Best

*2026-08-11, version 4.9*

Very good spot on

### 5/5 — Great app

*2026-08-10, version 4.9*

This app is exactly what I needed and it was free. Thanks.

### 4/5 — Works well

*2026-08-07, version 4.9*

I used this app to help me detect a magnetised chain that was causing issues on my electric mountain bike

## Frequently asked questions about EMF & Magnetic Detector

### What does the EMF & Magnetic Detector app do?

This app uses your device's built-in magnetometer to detect and measure magnetic and electromagnetic fields. It can help you locate ferromagnetic metal objects like wires, pipes, coins, and keys, as well as discover hidden wood studs behind walls or plasterboard.

### How does the app detect metal and wires?

The app leverages your device's magnetic sensor to quantify the intensity of the magnetic field. When placed near ferromagnetic materials, these fields cause a disturbance, leading to an increase in the readings displayed by the app. An active detection beep alerts you when a certain limit is reached.

### Is this app a replacement for professional metal detector devices?

No, this app is intended for private and entertainment purposes only. While it can detect magnetic fields and metal objects, it is not a substitute for professional-grade metal detector devices.

### What are the main features of the EMF & Magnetic Detector app?

Key features include active detection beeps, automatic storage of time and measurements, and a gauge displaying magnetic field magnitude in both microteslas (μT) and milliGauss (mG). It also allows for the discovery of hidden wood studs behind walls.

### Who can benefit from using this app?

The app is useful for construction workers and handymen looking to find hidden wires in walls, students for educational projects and experiments, and anyone interested in exploring magnetic fields. Scientists, teachers, and engineers also use detector meters for similar purposes.

## Version history (last 5 releases)

### 4.9 — 2026-03-12

Improved detection accuracy with updated sensor-processing algorithms. Room Scan creates a stunning magnetic heatmap of your space.

### 4.8 — 2026-02-24

Improved detection accuracy with updated sensor-processing algorithms. Room Scan creates a stunning magnetic heatmap of your space.

### 4.7 — 2026-02-06

Improved detection accuracy with updated sensor-processing algorithms. Room Scan creates a stunning magnetic heatmap of your space.

### 4.6 — 2026-01-22

Improved detection accuracy with updated sensor-processing algorithms. New Room Scan creates a sharable 2D magnetic heatmap of your space.

### 4.4 — 2026-01-10

Improved detection accuracy with updated sensor-processing algorithms. Added Apple Watch support for quick readings. New Help/Tutorial screen for easier setup, calibration, and use.

## Apps similar to EMF & Magnetic Detector

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Metal Detector - Stud Finder](https://appshunter.io/ios/app/metal-detector-stud-finder/id6444347206) | 4.6 (414) | Free | Utilities |
| [Magnetometer ∞](https://appshunter.io/ios/app/magnetometer/id6753061844) | 4.3 (48) | Free | Utilities |
| [EMF Detector-Radiation Reader](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713) | 4.3 (319) | Free | Utilities |
| [Metal Detector Pro+](https://appshunter.io/ios/app/metal-detector-pro-plus/id6478103915) | 4.6 (36) | Free | Utilities |
| [Timegrapher - watch accuracy](https://appshunter.io/ios/app/timegrapher-watch-accuracy/id6450460771) | 2.8 (44) | Free | Utilities |
| [Smart Metal Detector](https://appshunter.io/ios/app/smart-metal-detector/id1114708518) | 4.4 (257) | Free | Utilities |

## More apps by Jose Bello

- [Leave Your Hat On - Change Your Look In Seconds](https://appshunter.io/ios/app/leave-your-hat-on-change-your-look-in-seconds/id939410929)
- [Dog Breeds Trivia Quizzes](https://appshunter.io/ios/app/dog-breeds-trivia-quizzes/id1013437388)
- [Scary Paranormal Camera](https://appshunter.io/ios/app/scary-paranormal-camera/id1023459171)
- [Electromagnetic EMF Detector](https://appshunter.io/ios/app/electromagnetic-emf-detector/id1031336728)
- [Metal Detector PRO - Meter](https://appshunter.io/ios/app/metal-detector-pro-meter/id1031339281)
- [Habit Time Tracker And Control](https://appshunter.io/ios/app/habit-time-tracker-and-control/id1047664910)

All apps by Jose Bello: https://appshunter.io/developer/1013437387

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*