# RadonEye vs TopInfrared

The clearest difference is rating: TopInfrared at 3.5 against RadonEye's 2.4. TopInfrared also leads on review sentiment (40% vs 20%) and update cadence (every 3 weeks vs every 3 months). RadonEye's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. TopInfrared sells 1 one-off in-app purchase. RadonEye asks for nothing beyond the download.

TopInfrared holds the better App Store score, 3.5 against 2.4. Both are backed by a comparable volume of ratings — 47 and 51 respectively. Written reviews point the same way: 20% of RadonEye's written reviews are positive against 40% of TopInfrared's.

RadonEye ships an update every 3 months, TopInfrared every 3 weeks. The most recent releases landed on October 14, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | RadonEye | TopInfrared |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (47 ratings)](https://appshunter.io/ios/app/radoneye/id1491883383/reviews) | **[3.5 (51 ratings)](https://appshunter.io/ios/app/topinfrared/id6452017744/reviews)** |
| Number of ratings | 47 | **51** |
| Positive reviews | 19.6% of reviews | **39.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 29 MB | 518 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FTLab](https://appshunter.io/developer/897369751) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### RadonEye

[App page](https://appshunter.io/ios/app/radoneye/id1491883383)

This smart device provides real-time radon detection for your home. It offers high sensitivity and accurate measurements, with data accessible and configurable via a smartphone app.

**Highlights:** Real-time radon detection, High sensitivity and accuracy, Dual ionization chamber system, Fast initial data output (<1 hour), Bluetooth smartphone connectivity, Data recording and graphing, Customizable alarm settings

**Features:** macOS Compatibility

**In-app purchases:** none


### TopInfrared

[App page](https://appshunter.io/ios/app/topinfrared/id6452017744)

This thermal imaging camera app provides high-resolution thermal images for precise temperature detection. It's ideal for inspecting insulation, examining electronics, and identifying heat loss with excellent accuracy and sensitivity.

**Highlights:** High-resolution thermal imaging (256x192), Precise temperature detection, Insulation inspection, Circuit board examination, High heat sensitivity (40mk), Low power consumption

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Features | $19.99 | one-time |


## Frequently asked questions

### Is RadonEye free?

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

### Is TopInfrared free?

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

### Which has better reviews, RadonEye or TopInfrared?

TopInfrared is rated higher. RadonEye averages 2.4 out of 5 from 47 ratings, while TopInfrared averages 3.5 from 51 ratings.

### Do RadonEye or TopInfrared have ads?

Neither RadonEye nor TopInfrared shows ads.

### Which is updated more often, RadonEye or TopInfrared?

RadonEye ships an update every 3 months, and TopInfrared every 3 weeks. Most recently, RadonEye was updated on October 14, 2026 and TopInfrared 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.*