# EMF Radiation Detector Reader vs GP NOVA gas detector

The clearest difference is in-app purchases: GP NOVA gas detector at none against EMF Radiation Detector Reader's 2. GP NOVA gas detector also leads on ads (none vs shown). EMF Radiation Detector Reader's advantage is update cadence (every 6 months vs every 27 months). On price, device support and iOS requirement 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. GP NOVA gas detector asks for nothing beyond the download.

EMF Radiation Detector Reader ships an update every 6 months, GP NOVA gas detector every 27 months. The most recent releases landed on October 21, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | EMF Radiation Detector Reader | GP NOVA gas detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (5K ratings)](https://appshunter.io/ios/app/emf-radiation-detector-reader/id1507914734/reviews)** | — |
| Number of ratings | **5K** | — |
| Positive reviews | 53.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 27 months |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 65 MB |
| Requires iOS | 15.6 | **14.2** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rounding Squares BV](https://appshunter.io/developer/976539506) | [Geopal](https://appshunter.io/developer/1573577681) |

## 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


### GP NOVA gas detector

[App page](https://appshunter.io/ios/app/gp-nova-gas-detector/id1573577679)

**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 GP NOVA gas detector free?

GP NOVA gas detector is free to download, with no in-app purchases.

### Do EMF Radiation Detector Reader or GP NOVA gas detector have ads?

EMF Radiation Detector Reader shows ads; GP NOVA gas detector does not.

### Which is updated more often, EMF Radiation Detector Reader or GP NOVA gas detector?

EMF Radiation Detector Reader ships an update every 6 months, and GP NOVA gas detector every 27 months. Most recently, EMF Radiation Detector Reader was updated on October 21, 2026 and GP NOVA gas detector on October 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*