# SmartThermal vs TopInfrared

The clearest difference is rating: SmartThermal at 5.0 against TopInfrared's 3.5. SmartThermal also leads on in-app purchases (none vs 1). TopInfrared's advantage is review sentiment (40% vs 8%) and ratings volume (48 vs 1). On price, update cadence, ads and device support there is nothing between them.

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

SmartThermal holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: TopInfrared has 48 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 8% of SmartThermal's written reviews are positive against 40% of TopInfrared's, so the app with the better star average is not the one people write more warmly about.

SmartThermal ships an update every 6 weeks, TopInfrared every 3 weeks. The most recent releases landed on June 7, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | SmartThermal | TopInfrared |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smartthermal/id1563868514/reviews)** | [3.5 (48 ratings)](https://appshunter.io/ios/app/topinfrared/id6452017744/reviews) |
| Number of ratings | 1 | **48** |
| Positive reviews | 7.7% of reviews | **39.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 55 MB | 518 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Qingkong Technology Co., Ltd.](https://appshunter.io/developer/1563857297) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### SmartThermal

[App page](https://appshunter.io/ios/app/smartthermal/id1563868514)

Connect your mobile device to observation devices for real-time viewing and recording. Control your observation equipment directly from your smartphone.

**Highlights:** Connect to ThermEyeTec observation devices, Use smartphone as mobile viewfinder, Record video and images, Full smartphone control of observation 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 SmartThermal free?

SmartThermal 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, SmartThermal or TopInfrared?

SmartThermal is rated higher. SmartThermal averages 5.0 out of 5 from 1 ratings, while TopInfrared averages 3.5 from 48 ratings.

### Do SmartThermal or TopInfrared have ads?

Neither SmartThermal nor TopInfrared shows ads.

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

SmartThermal ships an update every 6 weeks, and TopInfrared every 3 weeks. Most recently, SmartThermal was updated on June 7, 2026 and TopInfrared on September 23, 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.*