# iSTC. vs Thermal Filter

The clearest difference is rating: Thermal Filter at 4.4 against iSTC.'s 1.5. Thermal Filter also leads on update cadence (daily vs every 2 months) and ratings volume (84 vs 2). iSTC.'s advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. Thermal Filter sells 1 in-app purchase, starting at $6.99 per 7 days. iSTC. asks for nothing beyond the download.

Thermal Filter holds the better App Store score, 4.4 against 1.5. That said, the two scores are not equally well evidenced: Thermal Filter has 84 ratings behind it against 2, so its average is the more settled of the two.

iSTC. ships an update every 2 months, Thermal Filter daily. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | iSTC. | Thermal Filter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/istc/id1475875977/reviews) | **[4.4 (84 ratings)](https://appshunter.io/ios/app/thermal-filter-camera-vision/id6745603515/reviews)** |
| Number of ratings | 2 | **84** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 57 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HK Meet Ltd](https://appshunter.io/developer/687246274) | [Paige Bradshow](https://appshunter.io/developer/1773249642) |

## 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 Filter

[App page](https://appshunter.io/ios/app/thermal-filter-camera-vision/id6745603515)

Transform your photos and videos with simulated thermal, infrared, and night vision effects. This creative camera tool offers a unique, futuristic twist to your content, perfect for artistic exploration and social media.

**Highlights:** Simulated thermal camera mode, Infrared-style effects, Night effects simulator, Zoom and focus functionality, Edit and retouch existing media, Creative simulator effects

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Trial | $6.99 | per 7 days |


## Frequently asked questions

### Is iSTC. free?

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

### Is Thermal Filter free?

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

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

Thermal Filter is rated higher. iSTC. averages 1.5 out of 5 from 2 ratings, while Thermal Filter averages 4.4 from 84 ratings.

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

Neither iSTC. nor Thermal Filter shows ads.

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

iSTC. ships an update every 2 months, and Thermal Filter daily. Most recently, iSTC. was updated on October 7, 2026 and Thermal Filter on October 9, 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.*