# TAS Viewer vs Thermal Pro

The clearest difference is review sentiment: TAS Viewer at 100% against Thermal Pro's 0%. TAS Viewer also leads on update cadence (every 2 months vs every 4 months). Thermal Pro's advantage is iOS requirement (12.0 vs 14.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TAS Viewer ships an update every 2 months, Thermal Pro every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | TAS Viewer | Thermal Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/thermal-pro/id6736890047/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 32 MB | 28 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [红杰 李](https://appshunter.io/developer/1602186097) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### TAS Viewer

[App page](https://appshunter.io/ios/app/tas-viewer/id1605567151)

This application provides tools for the secondary analysis of infrared imaging data. It allows users to examine and interpret thermal images for various purposes.

**Highlights:** Infrared imaging secondary analysis, Thermal image interpretation, Data examination tools

**Features:** macOS Compatibility

**In-app purchases:** none


### Thermal Pro

[App page](https://appshunter.io/ios/app/thermal-pro/id6736890047)

This portable thermal imager converts object heat radiation into images and temperature data. It offers high-resolution thermal imaging, real-time temperature measurement, and various display modes. Users can record videos, set alarms, and generate detailed analysis reports.

**Highlights:** 256x192 pixel infrared resolution, Real-time high-definition thermal imaging, Temperature range -20℃ to 550℃, Thermal imaging, fusion, and picture-in-picture modes, Real-time temperature sound/light alarms, Temperature measurement analysis reports, Video recording and playback

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TAS Viewer free?

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

### Is Thermal Pro free?

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

### Do TAS Viewer or Thermal Pro have ads?

Neither TAS Viewer nor Thermal Pro shows ads.

### Which is updated more often, TAS Viewer or Thermal Pro?

TAS Viewer ships an update every 2 months, and Thermal Pro every 4 months. Most recently, TAS Viewer was updated on November 3, 2026 and Thermal Pro on October 30, 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.*