# RadonPRO vs Radon Sniffer

The clearest difference is update cadence: RadonPRO at every 3 weeks against Radon Sniffer's every 2 months. On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RadonPRO ships an update every 3 weeks, Radon Sniffer every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | RadonPRO | Radon Sniffer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/radonpro/id1157657879/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 32 MB | 14 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gregory Enterprises](https://appshunter.io/developer/1157657878) | [Environmental Instruments Canada](https://appshunter.io/developer/1223543930) |

## What reviewers say

### RadonPRO

[App page](https://appshunter.io/ios/app/radonpro/id1157657879)

Connect wirelessly to your RadonPRO monitor to start tests and download data without an internet connection. Generate automatic PDF reports for unlimited customer management in the cloud.

**Highlights:** Wireless connection to RadonPRO monitor, Start tests remotely, Download data wirelessly, Unlimited cloud reporting, Automatic PDF report generation, Customer management

**Features:** macOS Compatibility

**In-app purchases:** none


### Radon Sniffer

[App page](https://appshunter.io/ios/app/radon-sniffer/id1271539715)

Monitor radon levels in real time with this companion app for CT007R Radon Sniffers. Expand device functionality with timed runs and customizable settings for enhanced environmental monitoring.

**Highlights:** Real-time radon level monitoring, Bluetooth Low Energy connectivity, Timed run functionality, Configurable settings, Companion app for CT007R Radon Sniffers

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RadonPRO free?

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

### Is Radon Sniffer free?

Radon Sniffer is free to download, with no in-app purchases.

### Do RadonPRO or Radon Sniffer have ads?

Neither RadonPRO nor Radon Sniffer shows ads.

### Which is updated more often, RadonPRO or Radon Sniffer?

RadonPRO ships an update every 3 weeks, and Radon Sniffer every 2 months. Most recently, RadonPRO was updated on November 6, 2026 and Radon Sniffer on November 3, 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.*