# OpenRadiation vs InterSpec Radiation Analysis

The clearest difference is review sentiment: InterSpec Radiation Analysis at 100% against OpenRadiation's 0%. InterSpec Radiation Analysis also leads on rating (4.2 vs 2.0) and iOS requirement (11.0 vs 15.0). OpenRadiation's advantage is update cadence (every 3 months vs every 11 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

InterSpec Radiation Analysis holds the better App Store score, 4.2 against 2.0. Both are backed by a comparable volume of ratings — 4 and 10 respectively. Written reviews point the same way: 0% of OpenRadiation's written reviews are positive against 100% of InterSpec Radiation Analysis's.

OpenRadiation ships an update every 3 months, InterSpec Radiation Analysis every 11 months. The most recent releases landed on June 1, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | OpenRadiation | InterSpec Radiation Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/openradiation/id1246249831/reviews) | **[4.2 (10 ratings)](https://appshunter.io/ios/app/interspec-radiation-analysis/id1447080767/reviews)** |
| Number of ratings | 4 | **10** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 11 months |
| Monetization | Free | Free |
| Size | 54 MB | 80 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Autorite de surete nucleaire et de radioprotection](https://appshunter.io/developer/1861431469) | [William Johnson](https://appshunter.io/developer/1447080766) |

## 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


### InterSpec Radiation Analysis

[App page](https://appshunter.io/ios/app/interspec-radiation-analysis/id1447080767)

Analyze nuclear radiation spectral data to identify nuclides, determine source activity, and calculate shielding. Supports various detector file formats and includes tools for dose rate calculations and nuclide decay information.

**Highlights:** Spectral nuclear radiation data analysis, Nuclide identification, Source activity determination, Shielding amount calculation, Spectral file format conversion, Dose rate calculations, Interactive nuclide decay information

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpenRadiation free?

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

### Is InterSpec Radiation Analysis free?

InterSpec Radiation Analysis is free to download, with no in-app purchases.

### Which has better reviews, OpenRadiation or InterSpec Radiation Analysis?

InterSpec Radiation Analysis is rated higher. OpenRadiation averages 2.0 out of 5 from 4 ratings, while InterSpec Radiation Analysis averages 4.2 from 10 ratings.

### Do OpenRadiation or InterSpec Radiation Analysis have ads?

Neither OpenRadiation nor InterSpec Radiation Analysis shows ads.

### Which is updated more often, OpenRadiation or InterSpec Radiation Analysis?

OpenRadiation ships an update every 3 months, and InterSpec Radiation Analysis every 11 months. Most recently, OpenRadiation was updated on June 1, 2026 and InterSpec Radiation Analysis on September 13, 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.*