Comparison

OpenRadiation vs RadexM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Measure radioactivity levels
  • Assess radiation exposure
  • Contribute to citizen science
  • Collaborative data database
  • Share measurements
  • View data online
Features
Read full description

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.

About

RadexM

This utility app enhances the functionality of RADEX devices by allowing easy settings adjustments and providing a history of measurements. View your data in graphical or tabular formats after connecting via Bluetooth.

Highlights
  • Bluetooth device connection
  • Quick settings changes
  • Measurement history tracking
  • Graphical data display
  • Tabular data display
Read full description

The RadexM mobile application adds practical and valuable features to RADEX devices while making settings easier. Connection to devices is via Bluetooth. Right after installing the application you can quickly change the settings on the device, as well as see the history of measurements in the form of graphs or tables.

Screenshots

OpenRadiation4 screens
RadexM4 screens

Verdict

The call

The clearest difference is review sentiment: RadexM at 100% against OpenRadiation's 0%. RadexM also leads on rating (4.8 vs 2.0) and update cadence (monthly vs every 3 months). OpenRadiation's advantage is device support (3 vs 1). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

RadexM holds the better App Store score, 4.8 against 2.0. Both are backed by a comparable volume of ratings — 4 and 19 respectively. Written reviews point the same way: 0% of OpenRadiation's written reviews are positive against 100% of RadexM's.

UpkeepUpdate frequency

OpenRadiation ships an update every 3 months, RadexM monthly. The most recent releases landed on June 1, 2026 and September 16, 2026 respectively.

Scorecard5 real differences · 5 level
OpenRadiation versus RadexM: the parameters behind the verdict, then further details
ParameterOpenRadiationRadexM
PriceFreeFree
Rating2.0 (4 ratings)4.8 (19 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings419 — better
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size54 MB113 MB
Age rating4+4+
DeveloperAutorite de surete nucleaire et de radioprotectionKVARTA-RAD, OOO

Customer experience

OpenRadiation

All ratings3 ratings
Positive0.0%
Neutral66.7%
Negative33.3%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

RadexM

All ratings19 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

OpenRadiation

No in-app purchases

None

RadexM

No in-app purchases

Questions

Is OpenRadiation free?
OpenRadiation is free to download, with no in-app purchases.
Is RadexM free?
RadexM is free to download, with no in-app purchases.
Which has better reviews, OpenRadiation or RadexM?
RadexM is rated higher. OpenRadiation averages 2.0 out of 5 from 4 ratings, while RadexM averages 4.8 from 19 ratings.
Do OpenRadiation or RadexM have ads?
Neither OpenRadiation nor RadexM shows ads.
Which is updated more often, OpenRadiation or RadexM?
OpenRadiation ships an update every 3 months, and RadexM monthly. Most recently, OpenRadiation was updated on June 1, 2026 and RadexM on September 16, 2026.

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