# EMF Radiation Detector Reader vs Sensors NM

The clearest difference is rating: Sensors NM at 5.0 against EMF Radiation Detector Reader's 4.5. Sensors NM also leads on ads (none vs shown) and update cadence (every 4 weeks vs every 6 months). EMF Radiation Detector Reader's advantage is ratings volume (5K vs 4). On price, in-app purchases, monetization model 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 and Sensors NM sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sensors NM 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 4, so its average is the more settled of the two. Written reviews point the same way: 54% of EMF Radiation Detector Reader's written reviews are positive against 63% of Sensors NM's.

EMF Radiation Detector Reader ships an update every 6 months, Sensors NM every 4 weeks. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | EMF Radiation Detector Reader | Sensors NM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (5K ratings)](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sensors-nm/id1554884319/reviews)** |
| Number of ratings | **5K** | 4 |
| Positive reviews | 53.5% of reviews | **62.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 20 MB | 11 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rounding Squares BV](https://appshunter.io/developer/976539506) | [Sergey Krasavin](https://appshunter.io/developer/1554884321) |

## What reviewers say

### 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


### Sensors NM

[App page](https://appshunter.io/ios/app/sensors-nm/id1554884319)

Monitor IoT devices and sensors, both public and your own. Visualize data with custom dashboards and historical plots. Receive important notifications and access aviation weather reports.

**Highlights:** Monitor public and private IoT sensors, Map view of public sensors, Create custom sensor dashboards, Plot sensor data over time, Receive project notifications, View aviation METAR reports

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation (Level 1) | $0.99 | one-time |
| Small tips | $1.99 | one-time |
| Donation (Level 2) | $1.99 | one-time |
| Donation (Level 3) | $3.99 | one-time |
| Medium tips | $4.99 | one-time |
| Donation (Level 4) | $5.99 | one-time |
| Huge tips | $10.99 | one-time |
| Donation (Level 5) | $10.99 | one-time |


## Frequently asked questions

### Is EMF Radiation Detector Reader free?

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

### Is Sensors NM free?

Sensors NM is free to download, with in-app purchases available.

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

Sensors NM is rated higher. EMF Radiation Detector Reader averages 4.5 out of 5 from 5K ratings, while Sensors NM averages 5.0 from 4 ratings.

### Do EMF Radiation Detector Reader or Sensors NM have ads?

EMF Radiation Detector Reader shows ads; Sensors NM does not.

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

EMF Radiation Detector Reader ships an update every 6 months, and Sensors NM every 4 weeks. Most recently, EMF Radiation Detector Reader was updated on October 29, 2026 and Sensors NM 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.*