Radon Sniffer vs DIRX2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Radon Sniffer
This utility app connects to a specific radon detection device via Bluetooth. It allows users to monitor radon levels in real-time, set up timed measurements, and configure device settings for expanded functionality.
- Real-time radon level monitoring
- Bluetooth Low Energy connectivity
- Timed run functionality
- Configurable device settings
- Companion app for CT007R hardware
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This is a companion app for CT007R Radon Sniffers. Connect to your CT007R via Bluetooth Low Energy and you can monitor radon levels in real time, expand the usage of your CT007R with timed runs and configurable settings. For more information on CT007R Radon Sniffers, visit: http://radonsniffer.com/
DIRX2
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The DIRX2 app is provides access to the DIRX2 platform from Tapwow. DIRX2 is the open solution for connected products and smart packaging that creates a “Hand to Brand” connection with your customers via NFC Tags, QR Codes and more. In order to use the app you need a license for the DIRX2 platform. For more information visit www.tapwow.net.
Screenshots
Verdict
Radon Sniffer and DIRX2 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Radon Sniffer ships an update every 2 months, DIRX2 every 3 months. The most recent releases landed on September 24, 2026 and May 16, 2026 respectively.
| Parameter | Radon Sniffer | DIRX2 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Environmental Instruments Canada Inc. | Tapwow, Llc |
In-app purchases
Radon Sniffer
No in-app purchases
DIRX2
No in-app purchases
