# Power Line Detector

> Detects live power lines using a device's magnetometer. (iPhone/iPad app by Pilcrow AG.)

- Source: https://appshunter.io/ios/app/power-line-detector/id791548402 (this page in markdown: same URL + `.md`)
- Developer: [Pilcrow AG](https://appshunter.io/developer/398663525)
- Category: Utilities, Productivity
- Price: $1.99
- Rating: 2.18/5 from 11 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 14 MB
- Released: 2014-01-09
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/power-line-detector/id791548402/reviews.md

## What is Power Line Detector?

Easily detect power lines hidden in your walls!

Power Line Detector is making use of the Magnetometer, that is built in every iPhone, iPod Touch or iPad.

As you may know, every power line is emitting a magnetic field. The built in magnetometer can be used to detect these magnetic fields.

◆ How it works:
    • Remove any cover or frame that contains magnetic or metallic parts from your iPhone/iPod Touch/iPad. Magnetic and metallic parts are disturbing the measurement!

    • Start the App.

    • Move your iPhone slowly close to the area where you suspect a power line carrying voltage.

▸If a voltage is present the display will flash and the mG reading grows while the message "Voltage detected" appears.
Note: mG stands for milliGauss, which is used to measure the strength of a magnetic field.


You may want to test it before use by slowly moving it to an area where you are sure there is a voltage present, like the cable running to your room light. Computer and electronic devices are not the best choice to test the fundtion of the app, they are often heavily shielded against magnetic and electric fields (which denies a proper reading since a shielding alwaysx works both ways).

Have fun with this handy tool!

## Key features

- Detects magnetic fields from power lines
- Utilizes device magnetometer
- Visual voltage detection indicator
- Displays magnetic field strength (mG)
- Provides instructions for accurate use

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/power-line-detector/id791548402/reviews.md

### 5/5 — Works Great!!!

*2020-12-30, version 2.0.0*

I calibrated the app and slowly hovered it over a place in the wall where I knew there was wiring, and the readings were off the chart.  I also got the same readings along the side of my bed, and around the air vents.  I’ve always noticed a magnetic pull around my bed, and your app helped me narrow it down!

### 1/5 — Useless

*2016-09-07, version 2.0.0*

Couldn't use the app because it checks for j break. It is debatable whether this is a good ideia when an app deals with personal or sensitive information. On an app like this, it's just plain stupid.

### 1/5 — Does not work

*2015-08-05, version 2.0.0*

Needle pops back and fourth even when now power line is present.  Deleted app.

### 1/5 — Ridiculous app

*2015-08-04, version 2.0.0*

They say this is "power line detector". Why does this impudent app check jail breaking or not first. 
I think the simple app of using magnetic sensor like this doesn't have any reason to check system environment. 
Very Ridiculous.

### 2/5 — Needs major improvement to setup and calibration

*2015-08-04, version 2.0.0*

The needle moves and the app either vibrates the phone or makes a noise when mead power line but no instruction or a good way to calibrate it. Calibrating at different distances from the power line resulted inter needle either being pegged at full scale or no detection at all. When it detected the line, I could move relatively large distances away from the line and still the needle was pegged at max.

### 1/5 — Absolutely Useless

*2015-08-04, version 2.0.0*

Beyond a waste of time. Deleted after less than 30 seconds.

### 2/5 — Needle works, no other graphics

*2015-08-03, version 2.0.0*

Looks cool -however once installed (iOS 8.4 /iPhone 6) there are no graphics -just a needle. 

Moving the phone past a power source moves the needle. 

Calibration button seems buggy.

Needs work.

## Frequently asked questions about Power Line Detector

### How does Power Line Detector work?

Power Line Detector uses the built-in magnetometer of your iPhone, iPod Touch, or iPad to detect magnetic fields. Live power lines emit these fields, and the app translates their strength into a readable mG (milliGauss) value.

### What is the price of Power Line Detector?

Power Line Detector is a paid app, available for $1.99. This one-time purchase grants you access to its features without any recurring fees.

### What devices is Power Line Detector compatible with?

Power Line Detector is designed for use on iPhones, iPads, and iPods. Ensure your device has a magnetometer for the app to function correctly.

### How accurate is Power Line Detector?

The app's accuracy depends on several factors, including the strength of the magnetic field and the presence of any metallic or magnetic materials that could interfere with readings. It's recommended to remove any covers or frames from your device before use.

### When was Power Line Detector last updated?

The latest version of Power Line Detector was released on January 26, 2015. It was initially released on January 9, 2014.

### What is the age rating for Power Line Detector?

Power Line Detector has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### Does Power Line Detector have ads?

The provided data does not specify if Power Line Detector contains advertisements. As a paid application, it is common for such apps to be ad-free.

### What is the user reception of Power Line Detector?

Based on the available data, Power Line Detector has a rating of 2.2 stars from 11 ratings. This suggests a mixed to negative user reception.

## Version history (last 1 release)

### 2.0.0 — 2015-01-26

This app has been updated by Apple to display the Apple Watch app icon.

▸ Rebuilt from scratch
▸ New UI
▸ 3 Themes
▸ Adaptive Filter added
▸ Graph added

## Apps similar to Power Line Detector

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ReMatter Operator](https://appshunter.io/ios/app/rematter-operator/id1570878029) | 4.3 (12) | Free | Utilities |
| [Faraday's Law Calculator](https://appshunter.io/ios/app/faradays-law-calculator/id1438817282) | 4.0 (1) | $2.99 | Utilities |
| [SmartBEAM](https://appshunter.io/ios/app/smartbeam/id1555953424) | — | Free | Utilities |
| [Honest Mobile](https://appshunter.io/ios/app/honest-mobile/id1475282514) | 2.5 (4) | Free | Utilities |
| [Numerals 123](https://appshunter.io/ios/app/numerals-123/id966689313) | — | $0.99 | Utilities |
| [Over-Under](https://appshunter.io/ios/app/over-under/id1513384581) | — | Free | Utilities |

## More apps by Pilcrow AG

- [System Monitor Utility - System Information](https://appshunter.io/ios/app/system-monitor-utility-system-information/id412788694)
- [QR Reader - Scan, Create and Read QR Code with Logo / Icon](https://appshunter.io/ios/app/qr-reader-scan-create-and-read-qr-code-with-logo-icon/id416340726)
- [Number Pad - Wireless Numeric Keypad, Numpad and Mouse Trackpad](https://appshunter.io/ios/app/number-pad-wireless-numeric-keypad-numpad-and-mouse-trackpad/id550816643)
- [Air Camera + Live Streaming for Camera and Voice](https://appshunter.io/ios/app/air-camera-plus-live-streaming-for-camera-and-voice/id577425066)
- [Battery Doc - Professional Care and Information](https://appshunter.io/ios/app/battery-doc-professional-care-and-information/id578400895)
- [Air Web](https://appshunter.io/ios/app/air-web/id594420058)

All apps by Pilcrow AG: https://appshunter.io/developer/398663525

---

*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 2026-06-10.*