# TopInfrared vs TSS WESTIMATION

The clearest difference is in-app purchases: TSS WESTIMATION at none against TopInfrared's 1. TopInfrared's advantage is iOS requirement (12.0 vs 15.5). 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. TSS WESTIMATION asks for nothing beyond the download.

TopInfrared ships an update every 3 weeks, TSS WESTIMATION monthly. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | TopInfrared | TSS WESTIMATION |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (51 ratings)](https://appshunter.io/ios/app/topinfrared/id6452017744/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 39.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 518 MB | 9 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) | [Vijay Makani](https://appshunter.io/developer/1821470132) |

## What reviewers say

### 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 |


### TSS WESTIMATION

[App page](https://appshunter.io/ios/app/tss-westimation/id6753621054)

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

**In-app purchases:** none


## Frequently asked questions

### Is TopInfrared free?

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

### Is TSS WESTIMATION free?

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

### Do TopInfrared or TSS WESTIMATION have ads?

Neither TopInfrared nor TSS WESTIMATION shows ads.

### Which is updated more often, TopInfrared or TSS WESTIMATION?

TopInfrared ships an update every 3 weeks, and TSS WESTIMATION monthly. Most recently, TopInfrared was updated on October 20, 2026 and TSS WESTIMATION on October 11, 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.*