# cMT Viewer vs Umbra Packaging

The clearest difference is update cadence: Umbra Packaging at weekly against cMT Viewer's every 2 months. cMT Viewer's advantage is iOS requirement (12.0 vs 15.6). 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.

cMT Viewer ships an update every 2 months, Umbra Packaging weekly. The most recent releases landed on October 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | cMT Viewer | Umbra Packaging |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (8 ratings)](https://appshunter.io/ios/app/cmt-viewer/id553431850/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 67 MB | 46 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Weintek Labs., Inc.](https://appshunter.io/developer/553431853) | [RCSOFT SRL](https://appshunter.io/developer/1727163587) |

## What reviewers say

### cMT Viewer

[App page](https://appshunter.io/ios/app/cmt-viewer/id553431850)

This application allows for the visual control of HMI hardware and software directly on an iPad. It offers seamless integration with powerful project editor software, enabling intuitive multi-touch gesture operation for data display and trend analysis.

**Highlights:** Multiple iPad clients, Simultaneous operation of multiple HMI servers, Intuitive multi-touch gestures, Fluid and vivid visualization, Account management for access privileges, Hot project switching

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

**In-app purchases:** none


### Umbra Packaging

[App page](https://appshunter.io/ios/app/umbra-packaging/id6754603342)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is cMT Viewer free?

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

### Is Umbra Packaging free?

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

### Do cMT Viewer or Umbra Packaging have ads?

Neither cMT Viewer nor Umbra Packaging shows ads.

### Which is updated more often, cMT Viewer or Umbra Packaging?

cMT Viewer ships an update every 2 months, and Umbra Packaging weekly. Most recently, cMT Viewer was updated on October 9, 2026 and Umbra Packaging on September 17, 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.*