BY ERMINESOFT    UPDATED August 21, 2025

| Version | 1.5.1 |
| Size | 92.1 MB |
| What's New | - Fixed crash on Android 7- Various bug fixes and stability improvements |
Welcome to the world of Z21, a versatile app designed to enhance your model train control experience. Whether you're a seasoned enthusiast or new to the hobby, Z21 offers a suite of features tailored to make managing and controlling your trains as smooth and enjoyable as possible.
Z21 stands out with its intuitive interface that simplifies sound and accessory control. You'll find it a breeze to manage your model trains with just a few taps. This app takes the complex task of train operation and makes it accessible to users of all skill levels.
One of the notable enhancements in Z21 is its user-friendly interface. The recent updates have made it simpler to navigate through its various features. Improvements have also been made to ensure that users can easily import and export data, keeping all your important information at your fingertips.
Imagine being able to control two trains simultaneously without the hassle of constantly switching screens. Z21 allows you to do just that, providing you with a more streamlined and enjoyable control experience. Although it's not yet perfect, the app is continually evolving to include new and improved features.
Safety is a priority with Z21. The app offers an emergency stop feature to quickly halt your trains if needed. However, it's worth noting that the latest version requires you to use the physical button on the Z21 base station for a full power cut, ensuring an extra layer of safety.
For those who like to keep detailed descriptions and information for each of their locomotives, Z21 provides comprehensive text fields. While there have been some issues with text formatting, particularly with inverted commas, the app is continually updated to address such bugs. Additionally, future updates could bring back the ability to sort locomotives, a much-appreciated feature from earlier versions.
Adding photos to your locomotive descriptions can make your records more visually appealing. Though there have been some memory-related bugs on different devices, progress has been made to resolve these issues in recent updates. Keeping your app updated will help ensure you enjoy a smoother experience.
Z21 is a dynamic app that continually evolves. Each update brings performance improvements and bug fixes, making it a stronger and more reliable tool for train control. New features and enhanced functionalities are always on the horizon, making it an app worth keeping an eye on.
Yes, you can control multiple trains simultaneously, providing a seamless experience without the need to switch screens frequently.
Ensure that you are using the latest version of Z21, as updates often contain bug fixes and performance improvements. If the problem persists, consider reaching out to the support team for assistance.
The emergency stop function in the app will halt your trains immediately. However, for a full power cut, you will need to use the physical stop button on the Z21 base station, adding an extra safety measure.
Yes, you can add photos to make your records more detailed and visually appealing. Some bugs have been reported, but updates are addressing these issues to enhance the stability of this feature.
Z21 is continually improving and adding features to ensure a smooth and enjoyable train control experience. Its user-friendly interface, multitasking capabilities, and continuous updates make it a must-have tool for any model train enthusiast.
Z21 is primarily a mobile app designed for smartphones. However, you can run Z21 on your computer using an Android emulator. An Android emulator allows you to run Android apps on your PC. Here's how to install Z21 on your PC using Android emuator:
Visit any Android emulator website. Download the latest version of Android emulator compatible with your operating system (Windows or macOS). Install Android emulator by following the on-screen instructions.
Launch Android emulator and complete the initial setup, including signing in with your Google account.
Inside Android emulator, open the Google Play Store (it's like the Android Play Store) and search for "Z21."Click on the Z21 app, and then click the "Install" button to download and install Z21.
You can also download the APK from this page and install Z21 without Google Play Store.
You can now use Z21 on your PC within the Anroid emulator. Keep in mind that it will look and feel like the mobile app, so you'll navigate using a mouse and keyboard.
