# NDT X vs EMF Radiation Detector Reader

The clearest difference is review sentiment: NDT X at 100% against EMF Radiation Detector Reader's 53%. NDT X also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 2). EMF Radiation Detector Reader's advantage is ratings volume (5K vs 3). On price and device support there is nothing between them.

Both are free to download. EMF Radiation Detector Reader sells 2 in-app purchases, starting at $1.99 per 7 days. NDT X asks for nothing beyond the download.

NDT X holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: EMF Radiation Detector Reader has 5K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of NDT X's written reviews are positive against 53% of EMF Radiation Detector Reader's.

NDT X ships an update every 2 weeks, EMF Radiation Detector Reader every 6 months. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | NDT X | EMF Radiation Detector Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ndt-x-ray-toolbox/id1291387260/reviews)** | [4.5 (5K ratings)](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734/reviews) |
| Number of ratings | 3 | **5K** |
| Positive reviews | **100.0% of reviews** | 53.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 83 MB | 20 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Visiconsult X-ray Systems & Solutions GmbH](https://appshunter.io/developer/1291387259) | [Rounding Squares BV](https://appshunter.io/developer/976539506) |

## What reviewers say

### NDT X

[App page](https://appshunter.io/ios/app/ndt-x-ray-toolbox/id1291387260)

This app provides essential tools for x-ray calculations, including geometric and CT calculations, image viewing, and quality control. It offers explanations for formulas and supports common detectors for easier use.

**Highlights:** TIFF and DICONDE image viewer, Geometric calculations, X-ray standards support, Image quality control, CT calculations, Formula explanations, Detector selection tool

**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 NDT X free?

NDT X is free to download, 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, NDT X or EMF Radiation Detector Reader?

NDT X is rated higher. NDT X averages 5.0 out of 5 from 3 ratings, while EMF Radiation Detector Reader averages 4.5 from 5K ratings.

### Do NDT X or EMF Radiation Detector Reader have ads?

EMF Radiation Detector Reader shows ads; NDT X does not.

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

NDT X ships an update every 2 weeks, and EMF Radiation Detector Reader every 6 months. Most recently, NDT X was updated on October 14, 2026 and EMF Radiation Detector Reader on October 21, 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.*