# OpenRadiation vs RADOM

The clearest difference is update cadence: OpenRadiation at every 3 months against RADOM's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

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

OpenRadiation ships an update every 3 months, RADOM every 8 months. The most recent releases landed on June 1, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | OpenRadiation | RADOM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (4 ratings)](https://appshunter.io/ios/app/openradiation/id1246249831/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | Free | — |
| Size | 54 MB | 3 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Autorite de surete nucleaire et de radioprotection](https://appshunter.io/developer/1861431469) | [JS TECHWIN Co., Ltd.](https://appshunter.io/developer/1641211285) |

## 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

**In-app purchases:** none


### RADOM

[App page](https://appshunter.io/ios/app/radom/id1641211283)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpenRadiation free?

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

### Is RADOM free?

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

### Do OpenRadiation or RADOM have ads?

Neither OpenRadiation nor RADOM shows ads.

### Which is updated more often, OpenRadiation or RADOM?

OpenRadiation ships an update every 3 months, and RADOM every 8 months. Most recently, OpenRadiation was updated on June 1, 2026 and RADOM on September 17, 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.*