# Magnetometer / Gaussmeter vs EMF Detector

The clearest difference is price: EMF Detector at Free against Magnetometer / Gaussmeter's $0.99. EMF Detector also leads on update cadence (every 2 weeks vs every 40 months) and ratings volume (319 vs 1). Magnetometer / Gaussmeter's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 3). On ads and device support there is nothing between them.

EMF Detector is free to download; Magnetometer / Gaussmeter costs $0.99 up front. EMF Detector sells 2 in-app purchases, starting at $4.99 per month. Magnetometer / Gaussmeter asks for nothing beyond the download.

Magnetometer / Gaussmeter holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: EMF Detector has 319 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Magnetometer / Gaussmeter's written reviews are positive against 25% of EMF Detector's.

Magnetometer / Gaussmeter ships an update every 40 months, EMF Detector every 2 weeks. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Magnetometer / Gaussmeter | EMF Detector |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/magnetometer-gaussmeter/id944150988/reviews)** | [4.3 (319 ratings)](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713/reviews) |
| Number of ratings | 1 | **319** |
| Positive reviews | **50.0% of reviews** | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#192** | — |
| Size | 4 MB | 11 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stefano Caschi](https://appshunter.io/developer/306389929) | [新雨 李](https://appshunter.io/developer/1559932632) |

## What reviewers say

### Magnetometer / Gaussmeter

[App page](https://appshunter.io/ios/app/magnetometer-gaussmeter/id944150988)

**Currently charting:** #192 Top Paid · Utilities (US App Store)

Transforms your device into a magnetic field strength meter. Detect residual magnetism in steel objects, measure magnet strength, and analyze magnetic fields on three axes. Useful for various applications including material assessment and component analysis.

**Highlights:** Magnetic Strength Meter (DC Gauss Meter), Detect residual magnetism in steel, Measure magnetism on three axes (x,y,z), Switchable units: Tesla, Gauss, 1 mG (0.1μT) Resolution, Check magnet strength

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### EMF Detector

[App page](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| unlimited features | $4.99 | per month |
| unlimited features | $14.99 | one-time |


## Frequently asked questions

### Is Magnetometer / Gaussmeter free?

Magnetometer / Gaussmeter costs $0.99, with no in-app purchases.

### Is EMF Detector free?

EMF Detector is free to download, with in-app purchases available.

### Which has better reviews, Magnetometer / Gaussmeter or EMF Detector?

Magnetometer / Gaussmeter is rated higher. Magnetometer / Gaussmeter averages 5.0 out of 5 from 1 ratings, while EMF Detector averages 4.3 from 319 ratings.

### Do Magnetometer / Gaussmeter or EMF Detector have ads?

Neither Magnetometer / Gaussmeter nor EMF Detector shows ads.

### Which is updated more often, Magnetometer / Gaussmeter or EMF Detector?

Magnetometer / Gaussmeter ships an update every 40 months, and EMF Detector every 2 weeks. Most recently, Magnetometer / Gaussmeter was updated on October 2, 2026 and EMF Detector on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*