# OpenRadiation vs RadexM

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 (every 3 weeks 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.

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

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.

OpenRadiation ships an update every 3 months, RadexM every 3 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | OpenRadiation | RadexM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/openradiation/id1246249831/reviews) | **[4.8 (19 ratings)](https://appshunter.io/ios/app/radexm/id1524841479/reviews)** |
| Number of ratings | 4 | **19** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 57 MB | 113 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ASNR](https://appshunter.io/developer/1861431469) | [KVARTA-RAD, OOO](https://appshunter.io/developer/1524841481) |

## What reviewers say

### OpenRadiation

[App page](https://appshunter.io/ios/app/openradiation/id1246249831)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### RadexM

[App page](https://appshunter.io/ios/app/radexm/id1524841479)

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

**In-app purchases:** none


## Frequently asked 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 every 3 weeks. Most recently, OpenRadiation was updated on October 24, 2026 and RadexM on October 20, 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.*