# EMF Radiation Detector Reader vs Detector CO2

The clearest difference is rating: EMF Radiation Detector Reader at 4.5 against Detector CO2's 2.0. EMF Radiation Detector Reader also leads on ratings volume (4.7K vs 1). Detector CO2's advantage is in-app purchases (none vs 2) and ads (none vs shown). 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. Detector CO2 asks for nothing beyond the download.

EMF Radiation Detector Reader holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: EMF Radiation Detector Reader has 4.7K ratings behind it against 1, so its average is the more settled of the two.

EMF Radiation Detector Reader ships an update every 7 months, Detector CO2 every 3 weeks. The most recent releases landed on September 30, 2026 and June 26, 2026 respectively.

## The numbers

| Metric | EMF Radiation Detector Reader | Detector CO2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4.7K ratings)](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/detector-co2/id1561126616/reviews) |
| Number of ratings | **4.7K** | 1 |
| Positive reviews | 52.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 9 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rounding Squares BV](https://appshunter.io/developer/976539506) | [Geotap Games S.L.](https://appshunter.io/developer/596729068) |

## 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


### Detector CO2

[App page](https://appshunter.io/ios/app/detector-co2/id1561126616)

Measure ambient CO2 levels using a compatible device. This utility app provides environmental data for your surroundings.

**Highlights:** Measure CO2 levels, Utilizes device capabilities, Environmental data display

**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 Detector CO2 free?

Detector CO2 is free to download, with no in-app purchases.

### Which has better reviews, EMF Radiation Detector Reader or Detector CO2?

EMF Radiation Detector Reader is rated higher. EMF Radiation Detector Reader averages 4.5 out of 5 from 4.7K ratings, while Detector CO2 averages 2.0 from 1 ratings.

### Do EMF Radiation Detector Reader or Detector CO2 have ads?

EMF Radiation Detector Reader shows ads; Detector CO2 does not.

### Which is updated more often, EMF Radiation Detector Reader or Detector CO2?

EMF Radiation Detector Reader ships an update every 7 months, and Detector CO2 every 3 weeks. Most recently, EMF Radiation Detector Reader was updated on September 30, 2026 and Detector CO2 on June 26, 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.*