# RadioactivityCounter vs Metal Detector EMF

The clearest difference is price: Metal Detector EMF at Free against RadioactivityCounter's $4.99. Metal Detector EMF also leads on rating (4.6 vs 3.1) and ratings volume (2.5K vs 10). RadioactivityCounter's advantage is in-app purchases (none vs 1) and chart position (#184 vs unranked). On review sentiment, update cadence, ads and device support there is nothing between them.

Metal Detector EMF is free to download; RadioactivityCounter costs $4.99 up front. Metal Detector EMF sells 1 one-off in-app purchase. RadioactivityCounter asks for nothing beyond the download.

Metal Detector EMF holds the better App Store score, 4.6 against 3.1. That said, the two scores are not equally well evidenced: Metal Detector EMF has 2.5K ratings behind it against 10, so its average is the more settled of the two. Written reviews split almost evenly too, at 68% and 68% positive.

RadioactivityCounter ships an update every 15 months, Metal Detector EMF every 9 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | RadioactivityCounter | Metal Detector EMF |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.1 (10 ratings)](https://appshunter.io/ios/app/radioactivitycounter/id464004677/reviews) | **[4.6 (2.5K ratings)](https://appshunter.io/ios/app/metal-detector-emf/id1073102084/reviews)** |
| Number of ratings | 10 | **2.5K** |
| Positive reviews | 68.4% of reviews | 68.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 9 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#184** | — |
| Size | 11 MB | 11 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dipl.-Ing. Rolf-Dieter Klein](https://appshunter.io/developer/309148367) | [ExaMobile S.A.](https://appshunter.io/developer/506014841) |

## What reviewers say

### RadioactivityCounter

[App page](https://appshunter.io/ios/app/radioactivitycounter/id464004677)

**Currently charting:** #184 Top Paid · Utilities (US App Store)

Transform your phone into a functional radioactivity counter. Measure gamma and some beta radiation using your device's camera sensor after calibration. Useful for personal use and experimentation with radiation sources.

**Highlights:** Real radioactivity counter functionality, Converts phone into Geiger Müller Counter, Measures gamma and some beta radiation, Requires calibration for accuracy, Expert setup for precise measurements, Supports various iPhone and iPad models

**Features:** macOS Compatibility

**In-app purchases:** none


### Metal Detector EMF

[App page](https://appshunter.io/ios/app/metal-detector-emf/id1073102084)

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.

**Highlights:** Detects nearby metal, Measures magnetic field, Finds hidden metallic objects, Acts as a treasure hunter tool, Assists ghost hunters, Visualizes reading trends with a graph

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AdBlock - Remove ads | $1.99 | one-time |

**What reviewers like**

- 🚀 Works great
- 👍 Surprisingly accurate
- 🔍 Helpful for finding lost items
- 💡 Innovative use of phone sensors
- 🔍 Useful for locating property markers

**What reviewers complain about**

- 🐛 Inconsistent performance
- 🔍 Limited detection range
- 🔍 Only detects magnetic metals
- 🔋 Drains battery quickly

**Reported bugs**

- Settings page not functioning
- App crashes on some devices
- Inaccurate readings in certain situations

**Requested features**

- Ability to detect non-magnetic metals
- Improved sensitivity and detection range
- Option to calibrate the sensor
- Metal identification feature


## Frequently asked questions

### Is RadioactivityCounter free?

RadioactivityCounter costs $4.99, with no in-app purchases.

### Is Metal Detector EMF free?

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

### Which has better reviews, RadioactivityCounter or Metal Detector EMF?

Metal Detector EMF is rated higher. RadioactivityCounter averages 3.1 out of 5 from 10 ratings, while Metal Detector EMF averages 4.6 from 2.5K ratings.

### Do RadioactivityCounter or Metal Detector EMF have ads?

Neither RadioactivityCounter nor Metal Detector EMF shows ads.

### Which is updated more often, RadioactivityCounter or Metal Detector EMF?

RadioactivityCounter ships an update every 15 months, and Metal Detector EMF every 9 months. Most recently, RadioactivityCounter was updated on November 6, 2026 and Metal Detector EMF on November 6, 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.*