# RealVNC Viewer vs cMT Viewer

RealVNC Viewer and cMT Viewer both sit at 4.8 stars, but that hides the real split: 72% of RealVNC Viewer's written reviews are positive against 43% of cMT Viewer's. RealVNC Viewer also leads on ratings volume (15K vs 8). cMT Viewer's advantage is iOS requirement (12.0 vs 15.0). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.8 for RealVNC Viewer against 4.6 for cMT Viewer. That said, the two scores are not equally well evidenced: RealVNC Viewer has 15K ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 72% of RealVNC Viewer's written reviews are positive against 43% of cMT Viewer's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | RealVNC Viewer | cMT Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (15K ratings)](https://appshunter.io/ios/app/realvnc-viewer-remote-desktop/id352019548/reviews)** | [4.6 (8 ratings)](https://appshunter.io/ios/app/cmt-viewer/id553431850/reviews) |
| Number of ratings | **15K** | 8 |
| Positive reviews | **72.3% of reviews** | 42.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 9 MB | 67 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RealVNC](https://appshunter.io/developer/352019552) | [Weintek Labs., Inc.](https://appshunter.io/developer/553431853) |

## What reviewers say

### RealVNC Viewer

[App page](https://appshunter.io/ios/app/realvnc-viewer-remote-desktop/id352019548)

Access and control your Mac, Windows, or Linux computers remotely from any device. View your desktop, use your keyboard and mouse, and manage files securely with end-to-end encryption. Sync connections across all your devices for seamless access.

**Highlights:** Instant remote access to computers, Control mouse and keyboard remotely, End-to-end session encryption, Cloud service for easy connection, Backup and sync connections, Virtual keyboard with advanced keys, Bluetooth keyboard support

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Smooth and responsive
- 🔒 Secure remote access
- 👍 Intuitive user interface
- 💡 Useful for remote work and support
- 🚀 Fast and reliable connection

**What reviewers complain about**

- 🐛 Crashes and connection issues
- 🔒 Concerns about privacy and data harvesting
- 💰 Paid subscription required for full functionality
- 🔍 Lack of mouse/trackpad support
- 🔍 Inconsistent performance on different devices

**Reported bugs**

- Cursor and screen synchronization issues
- Incompatibility with certain macOS and iOS versions
- Frequent disconnections and login problems
- Keyboard input not working as expected

**Requested features**

- Add support for audio streaming
- Improve clipboard and file transfer functionality
- Provide better multi-monitor support
- Allow customization of keyboard and mouse controls
- Implement a true touch-based interface


### 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


## Frequently asked questions

### Is RealVNC Viewer free?

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

### Is cMT Viewer free?

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

### Which has better reviews, RealVNC Viewer or cMT Viewer?

RealVNC Viewer is rated higher. RealVNC Viewer averages 4.8 out of 5 from 15K ratings, while cMT Viewer averages 4.6 from 8 ratings.

### Do RealVNC Viewer or cMT Viewer have ads?

Neither RealVNC Viewer nor cMT Viewer shows ads.

### Which is updated more often, RealVNC Viewer or cMT Viewer?

RealVNC Viewer ships an update every 2 months, and cMT Viewer every 2 months. Most recently, RealVNC Viewer was updated on November 3, 2026 and cMT Viewer on November 1, 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.*