# EMF Radiation Detector Reader vs Campos Electromagnéticos (CEM)

The clearest difference is in-app purchases: Campos Electromagnéticos (CEM) at none against EMF Radiation Detector Reader's 2. Campos Electromagnéticos (CEM) also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.6). EMF Radiation Detector Reader's advantage is update cadence (every 7 months vs every 16 months). 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. Campos Electromagnéticos (CEM) asks for nothing beyond the download.

EMF Radiation Detector Reader ships an update every 7 months, Campos Electromagnéticos (CEM) every 16 months. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | EMF Radiation Detector Reader | Campos Electromagnéticos (CEM) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4.7K ratings)](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734/reviews)** | — |
| Number of ratings | **4.7K** | — |
| Positive reviews | 53.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 7 months** | Every 16 months |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 27 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rounding Squares BV](https://appshunter.io/developer/976539506) | [Instituto Nacional de Seguridad e Higiene en el Trabajo](https://appshunter.io/developer/1019192741) |

## 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


### Campos Electromagnéticos (CEM)

[App page](https://appshunter.io/ios/app/campos-electromagneticos-cem/id1521220922)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EMF Radiation Detector Reader free?

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

### Is Campos Electromagnéticos (CEM) free?

Campos Electromagnéticos (CEM) is free to download, with no in-app purchases.

### Do EMF Radiation Detector Reader or Campos Electromagnéticos (CEM) have ads?

EMF Radiation Detector Reader shows ads; Campos Electromagnéticos (CEM) does not.

### Which is updated more often, EMF Radiation Detector Reader or Campos Electromagnéticos (CEM)?

EMF Radiation Detector Reader ships an update every 7 months, and Campos Electromagnéticos (CEM) every 16 months. Most recently, EMF Radiation Detector Reader was updated on October 17, 2026 and Campos Electromagnéticos (CEM) on October 8, 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.*