# RealVNC Viewer vs Sm@rtClient

The clearest difference is review sentiment: RealVNC Viewer at 72% against Sm@rtClient's 0%. RealVNC Viewer also leads on update cadence (every 2 months vs every 10 months) and iOS requirement (14.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

RealVNC Viewer ships an update every 2 months, Sm@rtClient every 10 months. The most recent releases landed on September 24, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | RealVNC Viewer | Sm@rtClient |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (15K ratings)](https://appshunter.io/ios/app/realvnc-viewer-remote-desktop/id352019548/reviews)** | — |
| Number of ratings | **15K** | — |
| Positive reviews | **72.4% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 9 MB | 57 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RealVNC Limited](https://appshunter.io/developer/352019552) | [Siemens AG](https://appshunter.io/developer/394503271) |

## 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

**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


### Sm@rtClient

[App page](https://appshunter.io/ios/app/smrtclient/id874209707)

Remotely operate and monitor industrial HMI systems from your mobile device. Access operator stations, view system layouts, and interact with hardware buttons via touch input. Supports various SIMATIC HMI systems and offers both view-only and coordinated operation modes.

**Highlights:** Remote operation of HMI systems, View-only monitoring mode, Coordinated operation with active remote control, Access to hardware buttons, Automatic HMI panel detection, Browser-based access to Unified Panels, WebView access to PLC webpages

**In-app purchases:** none


## Frequently asked questions

### Is RealVNC Viewer free?

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

### Is Sm@rtClient free?

Sm@rtClient is free to download, with no in-app purchases.

### Do RealVNC Viewer or Sm@rtClient have ads?

Neither RealVNC Viewer nor Sm@rtClient shows ads.

### Which is updated more often, RealVNC Viewer or Sm@rtClient?

RealVNC Viewer ships an update every 2 months, and Sm@rtClient every 10 months. Most recently, RealVNC Viewer was updated on September 24, 2026 and Sm@rtClient on June 10, 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.*