# iSTC. vs Thermal P2

The clearest difference is rating: Thermal P2 at 2.1 against iSTC.'s 1.5. Thermal P2 also leads on update cadence (fortnightly vs every 2 months) and ratings volume (27 vs 2). iSTC.'s advantage is monetization model (free vs paid) and iOS requirement (9.0 vs 11.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Thermal P2 holds the better App Store score, 2.1 against 1.5. That said, the two scores are not equally well evidenced: Thermal P2 has 27 ratings behind it against 2, so its average is the more settled of the two.

iSTC. ships an update every 2 months, Thermal P2 fortnightly. The most recent releases landed on June 1, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | iSTC. | Thermal P2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/istc/id1475875977/reviews) | **[2.1 (27 ratings)](https://appshunter.io/ios/app/thermal-p2/id6446384113/reviews)** |
| Number of ratings | 2 | **27** |
| Positive reviews | — | 10.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Paid |
| Size | 8 MB | 19 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HK Meet Ltd](https://appshunter.io/developer/687246274) | [Raysen Microsystem Technology Co., Ltd.](https://appshunter.io/developer/1738384120) |

## 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 P2

[App page](https://appshunter.io/ios/app/thermal-p2/id6446384113)

This professional thermal camera connects to your smartphone for plug-and-play temperature measurement. It's ideal for both personal and industrial use, from inspecting household utilities to diagnosing equipment issues.

**Highlights:** Ultra-small professional thermal camera, 12μm high-performance infrared detector, Self-developed ASIC chip, Compact size, lightweight, low power consumption, Plug-and-play smartphone connection, Accurate temperature measurement, Heat map analysis

**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 P2 free?

Thermal P2 is free to download, with no in-app purchases.

### Which has better reviews, iSTC. or Thermal P2?

Thermal P2 is rated higher. iSTC. averages 1.5 out of 5 from 2 ratings, while Thermal P2 averages 2.1 from 27 ratings.

### Do iSTC. or Thermal P2 have ads?

Neither iSTC. nor Thermal P2 shows ads.

### Which is updated more often, iSTC. or Thermal P2?

iSTC. ships an update every 2 months, and Thermal P2 fortnightly. Most recently, iSTC. was updated on June 1, 2026 and Thermal P2 on September 16, 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.*