# OpenRadiation vs FastTrack

The clearest difference is in-app purchases: OpenRadiation at none against FastTrack's 2. OpenRadiation also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. FastTrack sells 2 in-app purchases, starting at $2.99 per month. OpenRadiation asks for nothing beyond the download.

## The numbers

| Metric | OpenRadiation | FastTrack |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 57 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ASNR](https://appshunter.io/developer/1861431469) | [Jordi Milla Catalan](https://appshunter.io/developer/1883278836) |

## 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


### FastTrack

[App page](https://appshunter.io/ios/app/fasttrack-fasting-tracker/id6761045365)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastTrack Pro | $2.99 | per month |
| FastTrack Pro | $19.99 | per year |


## Frequently asked questions

### Is OpenRadiation free?

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

### Is FastTrack free?

FastTrack is free to download, with in-app purchases available.

### Do OpenRadiation or FastTrack have ads?

Neither OpenRadiation nor FastTrack shows ads.

---

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