# iSTC. vs Thermal Pro

The clearest difference is rating: iSTC. at 1.5 against Thermal Pro's 1.0. iSTC. also leads on iOS requirement (9.0 vs 12.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

iSTC. holds the better App Store score, 1.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

iSTC. ships an update every 2 months, Thermal Pro every 4 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | iSTC. | Thermal Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/istc/id1475875977/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/thermal-pro/id6736890047/reviews) |
| Number of ratings | **2** | 1 |
| Positive 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 | 8 MB | 28 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HK Meet Ltd](https://appshunter.io/developer/687246274) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### iSTC.

[App page](https://appshunter.io/ios/app/istc/id1475875977)

Connect a thermal image camera to your smartphone via Wi-Fi to view live thermal feeds. Analyze temperature data, capture images, and retrieve external measurement data from compatible products.

**Highlights:** Wi-Fi connection to thermal cameras, Live thermal image viewing on phone, Max/min/point temperature display, Image capture functionality, Bluetooth external measure data retrieval

**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 iSTC. free?

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

### Is Thermal Pro free?

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

### Which has better reviews, iSTC. or Thermal Pro?

iSTC. is rated higher. iSTC. averages 1.5 out of 5 from 2 ratings, while Thermal Pro averages 1.0 from 1 ratings.

### Do iSTC. or Thermal Pro have ads?

Neither iSTC. nor Thermal Pro shows ads.

### Which is updated more often, iSTC. or Thermal Pro?

iSTC. ships an update every 2 months, and Thermal Pro every 4 months. Most recently, iSTC. was updated on October 7, 2026 and Thermal Pro on October 13, 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.*