# OpenRadiation vs RadMap

The clearest difference is ads: OpenRadiation at none against RadMap's shown. RadMap's advantage is update cadence (every 9 days vs every 3 months). On price, in-app purchases, device support and iOS requirement 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, RadMap every 9 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | OpenRadiation | RadMap |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 57 MB | 24 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ASNR](https://appshunter.io/developer/1861431469) | [Byung Kwon Jeon](https://appshunter.io/developer/945226607) |

## 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


### RadMap

[App page](https://appshunter.io/ios/app/radmap-radiation-map/id6800562465)

**In-app purchases:** none


## Frequently asked questions

### Is OpenRadiation free?

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

### Is RadMap free?

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

### Do OpenRadiation or RadMap have ads?

RadMap shows ads; OpenRadiation does not.

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

OpenRadiation ships an update every 3 months, and RadMap every 9 days. Most recently, OpenRadiation was updated on October 7, 2026 and RadMap on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*