# Win vs Z21Updater

Win and Z21Updater both sit at 5.0 stars, but that hides the real split: 86% of Win's written reviews are positive against 50% of Z21Updater's. Z21Updater's advantage is iOS requirement (13.4 vs 15.6). On price, rating, ratings volume and update cadence 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 — 5.0 for Win against 5.0 for Z21Updater. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 86% of Win's written reviews are positive against 50% of Z21Updater's.

Win ships an update every 18 months, Z21Updater every 28 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Win | Z21Updater |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/win-digipet-mobile/id404427672/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/z21updater/id1463533460/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **85.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 18 months** | Every 28 months |
| Monetization | Free | Free |
| Size | 4 MB | 29 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, 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


### Z21Updater

[App page](https://appshunter.io/ios/app/z21updater/id1463533460)

Easily update your Z21, z21, z21start, and smartRail devices. The app automatically detects connected hardware and fetches the latest firmware directly from the server when online, simplifying the update process.

**Highlights:** Automatic device recognition, Direct server updates, Simple and functional update process, Supports Z21, z21, z21start, smartRail

**In-app purchases:** none


## Frequently asked questions

### Is Win free?

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

### Is Z21Updater free?

Z21Updater is free to download, with no in-app purchases.

### Which has better reviews, Win or Z21Updater?

Win and Z21Updater are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Win or Z21Updater have ads?

Neither Win nor Z21Updater shows ads.

### Which is updated more often, Win or Z21Updater?

Win ships an update every 18 months, and Z21Updater every 28 months. Most recently, Win was updated on November 1, 2026 and Z21Updater on November 3, 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.*