# Metal Sniffer Free - Metal Detector & Tesla Meter

> Detects magnetic fields using a device's built-in magnetometer. (iPhone/iPad app by 海文 王.)

- Source: https://appshunter.io/ios/app/metal-sniffer-free-metal-detector-and-tesla-meter/id1146121996 (this page in markdown: same URL + `.md`)
- Developer: [海文 王](https://appshunter.io/developer/380479150)
- Category: Utilities, Productivity
- Price: Free
- Rating: 3.70/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 5 MB
- Languages: American English
- Released: 2016-09-10
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/metal-sniffer-free-metal-detector-and-tesla-meter/id1146121996/reviews.md

## What is Metal Sniffer Free?

This app measures magnetic field using a magnetic sensor that is built into your device.

The magnetic field level (EMF) in nature is about 49μT(micro tesla) or 490mG(milli gauss); 1μT = 10mG. When any metal is near, the value of magnetic field will increase.

Usage is simple: Open the app, and move it around. The magnetic field level will constantly fluctuate. That's it! You can find electrical wires in the walls (like a stud finder) and iron pipes in the ground.

A lot of ghost hunters had downloaded this app, and they had experimented as a ghost detector.

The accuracy depends entirely on your magnetic sensor (magnetometer). Note that it is affected by electronic equipment (TV, PC) due to electromagnetic waves.


* Main features:
- Alarm level
- Beep sound
- Material design


** Metal detector cannot detect gold, silver and coins made by copper. They are classified as non-ferrous that has no magnetic field.

## Key features

- Magnetic field measurement
- Detects electrical wires
- Locates iron pipes
- Alarm level indicator
- Beep sound alert
- Material design

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/metal-sniffer-free-metal-detector-and-tesla-meter/id1146121996/reviews.md

### 1/5 — Useless

*2018-07-29*

Holding it up to a tree the app is saying to me it detects metal!

### 5/5 — Can't find any metal...

*2017-03-30*

...but have detected numerous ghosts. No. Wait. Metal.

## Frequently asked questions about Metal Sniffer Free

### What can Metal Sniffer Free detect?

Metal Sniffer Free can detect magnetic fields, helping you find electrical wires in walls and iron pipes in the ground. It cannot detect non-ferrous metals like gold, silver, or copper.

### How accurate is Metal Sniffer Free?

The accuracy of Metal Sniffer Free depends entirely on your device's magnetic sensor (magnetometer). Electronic equipment emitting electromagnetic waves can also affect its readings.

### Does Metal Sniffer Free have ads?

No, Metal Sniffer Free does not contain advertisements.

### What devices support Metal Sniffer Free?

Metal Sniffer Free is supported on iPhone, iPad, and iPod devices.

### What is the age rating for Metal Sniffer Free?

Metal Sniffer Free has an age rating of 4+.

### How often is Metal Sniffer Free updated?

Metal Sniffer Free was last updated on September 10, 2016, with version 1.0.0. It has not received updates since then.

### What is the user sentiment for Metal Sniffer Free?

Based on the available data, Metal Sniffer Free has a rating of 3.7 stars from 3 ratings, suggesting a mixed to positive user reception.

### Can Metal Sniffer Free detect gold or silver?

No, Metal Sniffer Free cannot detect gold, silver, or coins made of copper because these are non-ferrous metals and do not have a magnetic field.

## Version history (last 1 release)

### 1.0.0 — 2016-09-10

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

## Apps similar to Metal Sniffer Free

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [EMF & Magnetic Detector](https://appshunter.io/ios/app/emf-and-magnetic-detector/id1403751803) | 4.5 (305) | Free | Utilities |
| [Magnetscape Lite](https://appshunter.io/ios/app/magnetscape-lite/id1226896689) | 3.8 (4) | Free | Utilities |
| [Metal Detector for iPhone](https://appshunter.io/ios/app/metal-detector-for-iphone/id1086511476) | 4.0 (348) | Free | Utilities |
| [Metal Detector & Stud Finder](https://appshunter.io/ios/app/metal-detector-and-stud-finder/id1632278579) | 4.1 (54) | Free | Utilities |
| [Metal Detector Stud Finder](https://appshunter.io/ios/app/metal-detector-stud-finder/id6478007707) | 4.7 (6) | Free | Utilities |
| [Metal Detector Pro+](https://appshunter.io/ios/app/metal-detector-pro-plus/id6478103915) | 4.6 (29) | Free | Utilities |

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All apps by 海文 王: https://appshunter.io/developer/380479150

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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 2026-06-01.*