# Z21Updater

> App for updating Z21, z21, z21start, and smartRail devices. (iPhone/iPad app by Modelleisenbahn GmbH.)

- Source: https://appshunter.io/ios/app/z21updater/id1463533460 (this page in markdown: same URL + `.md`)
- Developer: [Modelleisenbahn GmbH](https://appshunter.io/developer/533805542)
- Category: Lifestyle, Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.4 · 29 MB
- Languages: English
- Released: 2019-10-01
- Data updated: 2026-08-31
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/z21updater/id1463533460/reviews.md

## What is Z21Updater?

This app allows you to conveniently keep your Z21, z21, z21start and smartRail always up to date.
The connected device is automatically recognized by the app. New updates are directly queried from the server when connected to the Internet thus the update process is very simple and functional.

## Key features

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

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/z21updater/id1463533460/reviews.md

### 1/5 — Schrott

*2026-01-04, version 2.1.1*

Leider völlig unbrauchbar und nur mit vorsichtig zu gebrauchen. Nach dem Versuch hiermit ein Firmware Update zu starten war die z21 plötzlich nicht mehr erreichbar und auch mit der multimaus nicht mehr steuerbar. Erst der altbekannte Weg über das PC Maintenance Tool konnte den Fehler beheben.

### 5/5 — Smooth Operation

*2020-10-20*

The Z21 is a very nice DCC controller. In my operations it controls two main lines running a total of five HO scale locomotives.  The Roco Z21 app allows users to use their personal devices to operate their locomotives. I am using a second and fourth generation iPad along with my Galaxy 9 cell phone. All of these devices operates the trains seamlessly and simultaneously.  I picked the unit up in August 2020 it has been running extremely smooth from the very 1st day out of the box. View the Z21 Run my trains on YouTube at  “Jeff’s Carter-Woods Layout”.

### 3/5 — Ausbaufähig!

*2020-04-03, version 2.0.0*

Für mich als reiner Apple-Nutzer schon mal ein enormer Fortschritt!
Aber bitte bald möglichst folgende Features ergänzen:
1. Einstellen Gleisspannung für schwarze Z21.
2. Update auch für Detector und Booster light.
Danke!

### 5/5 — Very easy to use

*2019-12-02*

Nice to see the updater app for iOS. Works very well and quickly.

### 1/5 — Schrott! Lässt sich nicht verbinden

*2019-10-27, version 2.0.0*

Eine Verbindung mit meiner Digikeijs ist aktuell nicht möglich! IP mehrfach eingegeben, ohne Erfolg! Solle irgend einen Port ändern.... keine Ahnung wo man den findet! Die alten App‘s laufen ohne Probleme! Von daher könnt ihr euch das laden sparen.

### 4/5 — Erstmal abwarten....

*2019-10-10, version 2.0.0*

...was die App dann tatsächlich kann.
Aber, ich find es gut, das ich zum updaten nicht mehr meinen PC nutzen muss. Allein dafür schon mal 4 Punkte.

## Frequently asked questions about Z21Updater

### What devices does Z21Updater support?

Z21Updater supports the Z21, z21, z21start, and smartRail digital train control systems. The app automatically recognizes these connected devices for a seamless update experience.

### How does Z21Updater update my devices?

When connected to the internet, Z21Updater directly queries the server for new updates. It then applies these updates to your connected Z21, z21, z21start, or smartRail device, making the process very simple and functional.

### Is Z21Updater available on Android?

Based on the provided data, Z21Updater is available on iPhone, iPad, and iPod. Information regarding Android availability is not specified.

### What is the rating for Z21Updater?

Z21Updater has a perfect rating of 5.0 stars from 1 rating. This indicates a highly positive user reception based on the available data.

### How often is Z21Updater updated?

The latest version of Z21Updater is 2.1.1, which was last updated on April 29, 2024. This suggests a relatively active development cycle.

### What is the age rating for Z21Updater?

Z21Updater has an age rating of 4+. This means it is suitable for users aged 4 and above.

### Does Z21Updater have ads?

No, Z21Updater does not contain advertisements. The app is free to use without any ad interruptions.

### Can I purchase Z21Updater?

Z21Updater is available for free. There are no in-app purchases or costs associated with downloading or using the application.

## Version history (last 3 releases)

### 2.1.1 — 2024-04-29

minor bug fixes and stability improvements

### 2.1.0 — 2022-12-14

- Find your Z21 via broadcast
- Unlock your z21Start
- Support of the Z21 XL

### 2.0.0 — 2019-10-01

No release notes.

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## More apps by Modelleisenbahn GmbH

- [Z21 mobile](https://appshunter.io/ios/app/z21-mobile/id533805539)
- [Z21 mobile HD](https://appshunter.io/ios/app/z21-mobile-hd/id535465008)
- [Roco NEXT Generation](https://appshunter.io/ios/app/roco-next-generation/id913873900)
- [Z21](https://appshunter.io/ios/app/z21/id1114706450)
- [RocoAR](https://appshunter.io/ios/app/rocoar/id1529108412)

All apps by Modelleisenbahn GmbH: https://appshunter.io/developer/533805542

## Related topics

[z21updater](https://appshunter.io/ios/topics/z21updater) · [z21](https://appshunter.io/ios/topics/z21) · [z21 mobile](https://appshunter.io/ios/topics/z21-mobile)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*