# IRThermometer vs TopInfrared

The clearest difference is in-app purchases: IRThermometer at none against TopInfrared's 1. IRThermometer also leads on iOS requirement (10.0 vs 12.0). TopInfrared's advantage is update cadence (every 3 weeks vs every 12 months). On price, ads and device support there is nothing between them.

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

IRThermometer ships an update every 12 months, TopInfrared every 3 weeks. The most recent releases landed on September 28, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | IRThermometer | TopInfrared |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (48 ratings)](https://appshunter.io/ios/app/topinfrared/id6452017744/reviews)** |
| Number of ratings | — | **48** |
| Positive reviews | — | 39.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 518 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [广权 黄](https://appshunter.io/developer/1330080046) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### IRThermometer

[App page](https://appshunter.io/ios/app/irthermometer/id1474759799)

**Features:** macOS Compatibility, Vision Pro support

**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 IRThermometer free?

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

### Is TopInfrared free?

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

### Do IRThermometer or TopInfrared have ads?

Neither IRThermometer nor TopInfrared shows ads.

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

IRThermometer ships an update every 12 months, and TopInfrared every 3 weeks. Most recently, IRThermometer was updated on September 28, 2026 and TopInfrared on October 14, 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.*