# Stack Golf vs Thermal Viewer

The clearest difference is in-app purchases: Stack Golf at none against Thermal Viewer's 3. Stack Golf also leads on update cadence (every 2 days vs every 5 days) and iOS requirement (12.0 vs 15.0). Thermal Viewer's advantage is device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Thermal Viewer sells 3 in-app purchases, starting at $4.99 per 7 days. Stack Golf asks for nothing beyond the download.

Stack Golf ships an update every 2 days, Thermal Viewer every 5 days. The most recent releases landed on September 14, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Stack Golf | Thermal Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thermal-viewer-ir-analyzer/id6779991634/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | — | Freemium |
| Size | 27 MB | 34 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Lebi Computer Technology Co. Ltd.](https://appshunter.io/developer/1004823999) | [Rush Tools LLC](https://appshunter.io/developer/1896773547) |

## What reviewers say

### Stack Golf

[App page](https://appshunter.io/ios/app/stack-golf/id6749558852)

**Features:** macOS Compatibility

**In-app purchases:** none


### Thermal Viewer

[App page](https://appshunter.io/ios/app/thermal-viewer-ir-analyzer/id6779991634)

Analyze radiometric thermal images directly on your iPhone, iPad, or Mac. This app supports various thermal image formats and offers detailed temperature analysis, including spot, box, and ellipse measurements. It allows for live re-analysis and export of data and settings, all while keeping your images private and offline.

**Highlights:** Analyze radiometric thermal images, Supports multiple thermal file formats, Tap to read exact temperature, Add spot, box, ellipse, and line measurements, Live re-analysis with adjustable parameters, Visible-light blend and MSX-style overlay, Export temperature matrix to CSV, Batch export of images and settings

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Yearly | $29.99 | per year |
| Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is Stack Golf free?

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

### Is Thermal Viewer free?

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

### Do Stack Golf or Thermal Viewer have ads?

Neither Stack Golf nor Thermal Viewer shows ads.

### Which is updated more often, Stack Golf or Thermal Viewer?

Stack Golf ships an update every 2 days, and Thermal Viewer every 5 days. Most recently, Stack Golf was updated on September 14, 2026 and Thermal Viewer on September 29, 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.*