# LabStretch2 vs Matte Viewer

The clearest difference is in-app purchases: LabStretch2 at none against Matte Viewer's 1. LabStretch2 also leads on iOS requirement (9.1 vs 16.0). Matte Viewer's advantage is update cadence (monthly vs every 55 months). On price, ads and device support there is nothing between them.

Both are free to download. Matte Viewer sells 1 one-off in-app purchase. LabStretch2 asks for nothing beyond the download.

LabStretch2 ships an update every 55 months, Matte Viewer monthly. The most recent releases landed on October 29, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | LabStretch2 | Matte Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/matte-viewer/id6476831058/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 55 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 3 MB |
| Requires iOS | **9.1** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Robert Mark](https://appshunter.io/developer/1049040325) | [Héliographe, Inc](https://appshunter.io/developer/1784071997) |

## What reviewers say

### LabStretch2

[App page](https://appshunter.io/ios/app/labstretch2/id1066022874)

**Features:** macOS Compatibility

**In-app purchases:** none


### Matte Viewer

[App page](https://appshunter.io/ios/app/matte-viewer/id6476831058)

This app allows you to preview and export depth and semantic maps from your iPhone photos. It offers an elegant interface and supports desktop-class features on iPad and Mac. The app prioritizes user privacy and has a very small file size.

**Highlights:** Preview depth and semantic maps, Export mattes for 3rd party software, Elegant and information-dense interface, Desktop-class features on iPad/Mac, Privacy-focused with no tracking, Small app size

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Export | $4.99 | one-time |


## Frequently asked questions

### Is LabStretch2 free?

LabStretch2 is free to download, with no in-app purchases.

### Is Matte Viewer free?

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

### Do LabStretch2 or Matte Viewer have ads?

Neither LabStretch2 nor Matte Viewer shows ads.

### Which is updated more often, LabStretch2 or Matte Viewer?

LabStretch2 ships an update every 55 months, and Matte Viewer monthly. Most recently, LabStretch2 was updated on October 29, 2026 and Matte Viewer on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*