# RailControl Unit — Retro Märklin fun

> Retro Märklin fun (iPhone/iPad app by Boterham.)

- Source: https://appshunter.io/ios/app/railcontrol-unit/id6755979312 (this page in markdown: same URL + `.md`)
- Developer: [Boterham](https://appshunter.io/developer/552486731)
- Category: Utilities, Games
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.5 · 5 MB
- Languages: American English, German (Germany)
- Released: 2025-12-29
- Data updated: 2026-08-21
- User reviews in markdown: https://appshunter.io/ios/app/railcontrol-unit/id6755979312/reviews.md

## What is RailControl Unit?

Transform your iPhone or iPad into a retro-inspired model train controller. RailControl Unit connects wirelessly to your Märklin CS2 or CS3, giving you control over your locomotives and accessories.

Fun Retro Control Experience
Designed to mirror the look and feel of the Märklin Control Unit of the eighties and nineties, you're controlling your model trains the way they were meant to be controlled back in the day.

Multiple Module Support
- Control Unit – Your main locomotive controller with speed slider, direction control, and function buttons
- Control 80 f – Add up to 9 additional controllers for multi-train operation
- Keyboard – Switch turnouts and control accessories with up to 16 keyboard modules
- Transformer – Just for fun, because every lay out needs it

Key Features
- Imitates the workings of the Märklin digital system to the smallest detail
- Connect via your local network to your Märklin Central Station
- Support for MM, MFX, and DCC decoder protocols for both locs and accessories
- Real-time speed and direction control
- Function buttons F0-F4 for lights and sounds
- Stop/Go button on Control Unit and Control 80 f

Multi-Platform
Use RailControl Unit on iPhone for handheld control or on iPad for a larger view.

Free to Try
The Control Unit module is free forever. Unlock all additional modules with a single one-time purchase – no subscriptions.



Requires a Märklin Central Station 2 or Central Station 3 with network connectivity.

Märklin and Central Station are trademarks of Gebr. Märklin & Cie GmbH, registered in the U.S. and other countries. RailControl Unit is not affiliated in any way with Gebr. Märklin & Cie GmbH.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Modules | $2.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2025-12-29

No release notes.

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## More apps by Boterham

- [Railer – Train timetable](https://appshunter.io/ios/app/railer-train-timetable/id591205121)
- [Clocky – Bedside Clock](https://appshunter.io/ios/app/clocky-bedside-clock/id828625087)
- [GPX Atlas – GPS Tracks & Maps](https://appshunter.io/ios/app/gpx-atlas-gps-tracks-and-maps/id916185969)
- [RailControl Pro](https://appshunter.io/ios/app/railcontrol-pro/id1598836499)

All apps by Boterham: https://appshunter.io/developer/552486731

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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 2026-08-21.*