OpenRadiation vs Radex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenRadiation
Measure ambient radioactivity levels and assess your exposure to ionizing radiation using a compatible sensor. Contribute to a citizen science project by sharing your measurements to build a collaborative database.
- Measure radioactivity levels
- Assess radiation exposure
- Contribute to citizen science
- Collaborative data database
- Share measurements
- View data online
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Looking to know the level of radioactivity around you and assess your exposure to ionising radiation? Thanks to this application, and a compatible sensor, you can measure radioactivity. You can also contribute to a citizen science project, by helping to create a collaborative data base of radioactivity measurements in the environment: OpenRadiation (published under an Open Database License). You will then be able to share your measurements using the application and view the data in the application or on the website www.openradiation.org. Create an account on the website www.openradiation.org, and obtain a compatible sensor (see the list of compatible sensors at www.openradiation.org). Activate Bluetooth under your mobile, configure your sensor to measure radioactivity, and publish your measurements. If you do not have a compatible sensor, you can always enter your measurements manually on the website or via the application. OpenRadiation currently brings together the following scientific and academic partners: IFFO-RME - training network in major educational risks -, IRSN - public expert in research and expertise on nuclear and radiological risks -, Planète Sciences – association contributing to the scientific and technical culture of young people - and SORBONNE UNIVERSITE Fablab - digital fabrication and rapid prototyping workshop, open to students, staff and the general public.
Radex
This application measures 5G EMF radiation using your device's sensors and magnetometer. It offers an easy-to-use interface with a color-coded system for readings and supports Apple Watch integration.
- 5G EMF radiation detection
- On-device sensor utilization
- Magnetometer for accuracy
- Color-coded readings
- Apple Watch support
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Radex is a mobile app which detects the 5G EMF Radiation on the device and around the enviroment, the software is calibrated with professional equipment and using on device sensors and magnetometer to measure accuracy. It is free and easy to use with a color code for reading. This app comes with support for Apple Watch.
Screenshots
Verdict
The clearest difference is ads: OpenRadiation at none against Radex's shown. OpenRadiation also leads on monetization model (free vs ad-supported). Radex's advantage is review sentiment (33% vs 0%) and rating (2.3 vs 2.0). On price, ratings volume, update cadence and in-app purchases there is nothing between them.
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.
Radex holds the better App Store score, 2.3 against 2.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 0% of OpenRadiation's written reviews are positive against 33% of Radex's.
OpenRadiation ships an update every 3 months, Radex every 2 months. The most recent releases landed on June 1, 2026 and September 9, 2026 respectively.
| Parameter | OpenRadiation | Radex |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (4 ratings) | 2.3 (3 ratings) — better |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 4 — better | 3 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 54 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Autorite de surete nucleaire et de radioprotection | NETM S A S |
Customer experience
OpenRadiation
Radex
In-app purchases
OpenRadiation
No in-app purchases
Radex
No in-app purchases







