# RadioactivityCounter vs EMF Radiation Detector Reader

The clearest difference is price: EMF Radiation Detector Reader at Free against RadioactivityCounter's $4.99. EMF Radiation Detector Reader also leads on rating (4.5 vs 3.1) and ratings volume (4.7K vs 10). RadioactivityCounter's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

EMF Radiation Detector Reader is free to download; RadioactivityCounter costs $4.99 up front. EMF Radiation Detector Reader sells 2 in-app purchases, starting at $1.99 per 7 days. RadioactivityCounter asks for nothing beyond the download.

EMF Radiation Detector Reader holds the better App Store score, 4.5 against 3.1. That said, the two scores are not equally well evidenced: EMF Radiation Detector Reader has 4.7K ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 68% of RadioactivityCounter's written reviews are positive against 53% of EMF Radiation Detector Reader's, so the app with the better star average is not the one people write more warmly about.

RadioactivityCounter ships an update every 15 months, EMF Radiation Detector Reader every 7 months. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | RadioactivityCounter | EMF Radiation Detector Reader |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.1 (10 ratings)](https://appshunter.io/ios/app/radioactivitycounter/id464004677/reviews) | **[4.5 (4.7K ratings)](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734/reviews)** |
| Number of ratings | 10 | **4.7K** |
| Positive reviews | **68.4% of reviews** | 53.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 7 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 11 MB | 20 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dipl.-Ing. Rolf-Dieter Klein](https://appshunter.io/developer/309148367) | [Rounding Squares BV](https://appshunter.io/developer/976539506) |

## What reviewers say

### RadioactivityCounter

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

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


### EMF Radiation Detector Reader

[App page](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734)

Detect electromagnetic fields (EMF) around you using your phone's sensors. Identify high-radiation zones in your home and workplace to better organize your environment and potentially improve well-being. Measure EMF emitted by various electronic devices and appliances.

**Highlights:** Detect EMF radiation, Measure EMF levels, Identify risk zones, Organize living space, Measure appliance emissions, No expensive equipment needed

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EMF Radiation Detector Premium Week | $1.99 | per 7 days |
| EMF Radiation Detector Premium Year | $9.99 | per year |

**What reviewers like**

- 👍 Works well around microwave
- 👍 Consistent results
- 👍 Useful tool for detecting EMF
- 👍 Legit EMF detection
- 👍 Helps find problem areas

**What reviewers complain about**

- 🐛 Ads cover reading numbers
- 🔍 Unclear how to interpret readings
- ⚠️ Questionable accuracy, only detects magnets
- 🔍 No explanation of safe/unsafe levels
- 🐛 Doesn't detect radio frequencies

**Reported bugs**

- Readings inconsistent or inaccurate
- Doesn't work as expected, only detects magnets

**Requested features**

- Add sound or vibration alerts for high EMF
- Provide more information on EMF levels and safety
- Improve layout to avoid ads covering readings


## Frequently asked questions

### Is RadioactivityCounter free?

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

### Is EMF Radiation Detector Reader free?

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

### Which has better reviews, RadioactivityCounter or EMF Radiation Detector Reader?

EMF Radiation Detector Reader is rated higher. RadioactivityCounter averages 3.1 out of 5 from 10 ratings, while EMF Radiation Detector Reader averages 4.5 from 4.7K ratings.

### Do RadioactivityCounter or EMF Radiation Detector Reader have ads?

EMF Radiation Detector Reader shows ads; RadioactivityCounter does not.

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

RadioactivityCounter ships an update every 15 months, and EMF Radiation Detector Reader every 7 months. Most recently, RadioactivityCounter was updated on October 5, 2026 and EMF Radiation Detector Reader on October 15, 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.*