# Sm@rtClient vs SigNow Mobile

The clearest difference is update cadence: SigNow Mobile at every 6 weeks against Sm@rtClient's every 10 months. SigNow Mobile also leads on iOS requirement (13.0 vs 18.0). 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.

Sm@rtClient ships an update every 10 months, SigNow Mobile every 6 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sm@rtClient | SigNow Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 57 MB | 67 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Siemens AG](https://appshunter.io/developer/394503271) | [Novus Produtos Eletronicos Ltda](https://appshunter.io/developer/1363116076) |

## What reviewers say

### 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


### SigNow Mobile

[App page](https://appshunter.io/ios/app/signow-mobile/id1641767470)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sm@rtClient free?

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

### Is SigNow Mobile free?

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

### Do Sm@rtClient or SigNow Mobile have ads?

Neither Sm@rtClient nor SigNow Mobile shows ads.

### Which is updated more often, Sm@rtClient or SigNow Mobile?

Sm@rtClient ships an update every 10 months, and SigNow Mobile every 6 weeks. Most recently, Sm@rtClient was updated on October 25, 2026 and SigNow Mobile on October 24, 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.*