# Radon Eye Plus vs TopInfrared

The clearest difference is in-app purchases: Radon Eye Plus at none against TopInfrared's 1. Radon Eye Plus also leads on iOS requirement (9.0 vs 12.0). TopInfrared's advantage is ratings volume (51 vs 4). On price, rating, review sentiment and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.5 for Radon Eye Plus against 3.5 for TopInfrared. That said, the two scores are not equally well evidenced: TopInfrared has 51 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 33% of Radon Eye Plus's written reviews are positive against 40% of TopInfrared's.

Radon Eye Plus ships an update monthly, TopInfrared every 3 weeks. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Radon Eye Plus | TopInfrared |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (4 ratings)](https://appshunter.io/ios/app/radon-eye-plus/id1284320339/reviews) | **[3.5 (51 ratings)](https://appshunter.io/ios/app/topinfrared/id6452017744/reviews)** |
| Number of ratings | 4 | **51** |
| Positive reviews | 33.3% of reviews | **39.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 518 MB |
| Requires iOS | **9.0** | 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

### Radon Eye Plus

[App page](https://appshunter.io/ios/app/radon-eye-plus/id1284320339)

This app connects to a RadonEyePlus device to monitor radon levels. It allows you to download measurement logs and visualize radon concentration data over time with graphs.

**Highlights:** Monitors radon measurement information, Downloads log data, Displays radon values as a graph, Connects with RadonEyePlus devices

**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 Radon Eye Plus free?

Radon Eye Plus 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, Radon Eye Plus or TopInfrared?

TopInfrared is rated higher. Radon Eye Plus averages 3.5 out of 5 from 4 ratings, while TopInfrared averages 3.5 from 51 ratings.

### Do Radon Eye Plus or TopInfrared have ads?

Neither Radon Eye Plus nor TopInfrared shows ads.

### Which is updated more often, Radon Eye Plus or TopInfrared?

Radon Eye Plus ships an update monthly, and TopInfrared every 3 weeks. Most recently, Radon Eye Plus was updated on October 13, 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.*