# Win vs Z21 mobile

The clearest difference is rating: Win at 5.0 against Z21 mobile's 4.4. Win also leads on review sentiment (86% vs 50%). Z21 mobile's advantage is update cadence (every 2 months vs every 18 months) and ratings volume (5 vs 1). 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.

Win holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Z21 mobile has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 86% of Win's written reviews are positive against 50% of Z21 mobile's.

Win ships an update every 18 months, Z21 mobile every 2 months. Both last shipped on October 11, 2026.

## The numbers

| Metric | Win | Z21 mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/win-digipet-mobile/id404427672/reviews)** | [4.4 (5 ratings)](https://appshunter.io/ios/app/z21-mobile/id533805539/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | **85.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 4 MB | 27 MB |
| Requires iOS | 15.6 | **6.1.6** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Markus Herzog](https://appshunter.io/developer/404427675) | [Modelleisenbahn GmbH](https://appshunter.io/developer/533805542) |

## What reviewers say

### Win

[App page](https://appshunter.io/ios/app/win-digipet-mobile/id404427672)

Control your model train setup remotely from your iPhone or iPad. Manage locomotives, switches, routes, and more with this companion app for Win-Digipet Premium Edition.

**Highlights:** Locomotive control, Function decoder control, Track layout management, Switching routes and tours, Solenoid device control, Emergency off state control

**Features:** macOS Compatibility

**In-app purchases:** none


### Z21 mobile

[App page](https://appshunter.io/ios/app/z21-mobile/id533805539)

Control your model train layout and locomotives from your iOS device. Manage your locomotive library, program digital components, and operate trains with touch controls. A demo mode is available.

**Highlights:** Connect to Z21 Digital Center, Manage locomotive libraries, Control locomotives (DCC/Motorola), Program digital components, Intuitive graphic interface, Locomotive function control

**In-app purchases:** none


## Frequently asked questions

### Is Win free?

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

### Is Z21 mobile free?

Z21 mobile is free to download, with no in-app purchases.

### Which has better reviews, Win or Z21 mobile?

Win is rated higher. Win averages 5.0 out of 5 from 1 ratings, while Z21 mobile averages 4.4 from 5 ratings.

### Do Win or Z21 mobile have ads?

Neither Win nor Z21 mobile shows ads.

### Which is updated more often, Win or Z21 mobile?

Win ships an update every 18 months, and Z21 mobile every 2 months. Most recently, Win was updated on October 11, 2026 and Z21 mobile on October 11, 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.*