# Wi-Fi DCS > iOS app for comprehensive model railroad control, including MTH, TMCC, and Legacy engines. (iPhone/iPad app by Mike's Train House, Inc..) - Source: https://appshunter.io/ios/app/wi-fi-dcs/id988168329 (this page in markdown: same URL + `.md`) - Developer: [Mike's Train House, Inc.](https://appshunter.io/developer/988168328) - Category: Entertainment, Utilities - Price: Free with in-app purchases - Rating: 3.67/5 from 24 App Store ratings · 36 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 26 MB - Languages: English - Released: 2015-11-10 - Data updated: 2026-08-09 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/wi-fi-dcs/id988168329/reviews.md ## What is Wi? Control you entire model railroad from any iOS phone or tablet in this simple to use yet feature rich app! The M.T.H. Digital Command System (DCS) is the most comprehensive and innovative model train control system available. While, at the same time, the easiest to set up and use! You’ll be running your trains in just a few minutes after installing the Wi-Fi DCS app and connecting to any one of several M.T.H. DCS track interface units. The DCS system is capable of running conventional AC or DC powered model trains utilizing track power controls as well as the ultimate experience of full featured MTH ProtoSound 2.0 or 3.0 and Atlas O® ProtoSound 3.0 locomotives. In addition, DCS is the only cross-platform model railroad control system. When cabled to a Lionel® command base DCS also runs TMCC® and Legacy® engines all within the same app, on the same track, at the same time!! No other system has this capability. The DCS app is compatible with our entry level system, the DCS Explorer for those just starting their journey into model railroading. For more advanced users, the DCS Wi-Fi Interface Unit (WIU) in combination with the Track Interface Unit (TIU) or, the all new Wi-Fi Track Interface Unit (WTIU) opens up the vast array of features available within the world of DCS. Run multiple trains simultaneously on the same track, control switches and accessories, and immerse yourself in the depth of sound and control features that is Wi-Fi DCS. Simply the best way to run YOUR railroad!! ## Key features - Comprehensive model railroad control - Run MTH ProtoSound 2.0/3.0 locomotives - Control Atlas O® ProtoSound 3.0 - Cross-platform control (TMCC®, Legacy®) - Run multiple trains simultaneously - Control switches and accessories - Immersive sound and control features ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Standard | $4.99 | one-time | | Premium | $24.99 | one-time | | Premium Upgrade | $19.99 | one-time | ## Recent user reviews (10 of 36) All indexed reviews: https://appshunter.io/ios/app/wi-fi-dcs/id988168329/reviews.md ### 5/5 — Tennessee Ron *2026-07-08, version 4.0.5* All is now working flawlessly ### 3/5 — ProtoCast feature does not work *2025-11-23, version 4.0.2* After being out almost a year, you’d think the app ProtoCast feature would work with a WTIU. ### 1/5 — New WTIU *2025-03-16, version 4.0.1* What the $&$ you buy a $400 piece of equipment and then you have to charge more to use the application that is not right!!! ### 1/5 — Still issue with MTH system *2025-01-06, version 4.0.1* I REALLY want to enjoy the mth Wi-Fi system. But there’s always bugs and issues. If you polled 100 people about the reliability of the mth system 50% or more would say they’ve experienced issues setting it up. Lionel Legacy system hands down is WAY my reliable. GEESH MTH! WTH! ### 5/5 — Easy App, Great to use *2024-12-21, version 4.0.1* I downloaded the app for my WTIU and it has been a breeze to learn. The interface is simple. Great job! ### 3/5 — Tennessee Ron *2024-12-17* Wonderful app. Nothing is perfect, but ALL MTH functions flawlessly. Those Lionel command engines also do well. Why complain? If you are stuck on Legacy equipment, then use Lionel’s programming. I am having so much fun running my system on an iPad. Great interface. Good response. Full features. If you want to have great control, and a heck of a lot of fun, take the plunge. As a former Lionel postwar collector and MTH fan, quit complaining. If it doesn’t meet your expectations, then either you are doing something wrong or you need to get a component replaced. Well done, MTH. The late great Barry Broskowitz “WiFi DCS Companion, 2nd edition “ is indispensable, and will contain more information and practical solutions than most will ever need to enjoy MTH WiFi DCS. Can’t wait for the WTIU to arrive. It supposedly has improved features. ### 1/5 — wtiu *2024-12-16, version 4.0.1* this app with wtiu dose not even work mth you screwed up so bad on this app and your wtiu your manual is terrible and dose not even help you FOR ANYONE don’t buy this just don’t buy lionel stuff instead. ### 4/5 — Premium version of 3.2.2 has problems *2024-02-02, version 3.2.3* The Premium version after the Dec. update will not add TMCC or Legacy controlled engines. Update 3.2.3 corrected the problem. ### 4/5 — Works again. *2024-01-21, version 3.2.3* Thank you for the update. The app works great again. ### 1/5 — Premium version of 3.2.2 has problems *2024-01-07* The Premium version after the Dec. update will not add TMCC or Legacy controlled engines. ## Frequently asked questions about Wi ### What does the Wi-Fi DCS app do? The Wi-Fi DCS app allows you to control your entire model railroad from any iOS phone or tablet. It provides comprehensive and innovative control for the M.T.H. Digital Command System (DCS) and can also manage TMCC® and Legacy® engines on the same track simultaneously. ### What types of model trains can I control with this app? You can control conventional AC or DC powered model trains, MTH ProtoSound 2.0 or 3.0 locomotives, and Atlas O® ProtoSound 3.0 locomotives. Additionally, when cabled to a Lionel command base, it can run TMCC® and Legacy® engines. ### Is the Wi-Fi DCS app free to use? The app itself is free to download and use, but it is free with in-app purchases. This indicates that while the core functionality might be available, certain advanced features or expansions may require additional purchases. ### What are the system requirements for the Wi-Fi DCS app? The app is compatible with iOS phones and tablets. For advanced features, it works with the DCS Wi-Fi Interface Unit (WIU) in combination with the Track Interface Unit (TIU) or the Wi-Fi Track Interface Unit (WTIU). ### Can I control multiple trains at once with this app? Yes, the app allows you to run multiple trains simultaneously on the same track. You can also control switches and accessories, immersing yourself in the depth of sound and control features offered by the DCS system. ## Version history (last 5 releases) ### 4.0.5 — 2026-07-01 New Features: -Adds 2 new features under "Advanced features" menu: -Join WTIU to home wifi wizard -WTIU Firmware update wizard Bug fixes: -Fixes an issue where older exports could not be imported because of an error -Fixes an issue when switching between multiple WTIU/WIUs -Auto refresh premium version on re-install/clear assuming internet access -Fixes an update to lashups to mirror remote functionality ### 4.0.2 — 2025-09-05 Minor bug fixes and enhancements ### 4.0.1 — 2024-12-10 Bug fixes, and enhancements ### 4.0.0 — 2024-11-01 Starting with version 4.0.0 the MTH DCS Wi-Fi Track Interface Unit is supported in addition to the previous Wi-Fi DCS track control products. The updated version of the app is required to operate the all new WTIU. The new app and WTIU hardware offer an array of new features such as conventional DC track power control, firmware updates via the app, faster response, as well as bug fixes and connection stability improvements. Over the coming months, streaming audio directly from your iOS device to the train, updating engine sound files, and a host of other new features will be added. ### 3.2.3 — 2024-01-20 Addressed issues regarding: * creating lash-ups * adding legacy engines * data import/export ## Apps similar to Wi | App | Rating | Price | Category | | --- | --- | --- | --- | | [Matrio Control](https://appshunter.io/ios/app/matrio-control/id1501302652) | 3.2 (9) | Free | Entertainment | | [Traxxas Link](https://appshunter.io/ios/app/traxxas-link/id474948763) | 3.7 (289) | Free | Entertainment | | [Traxxas Flight Link](https://appshunter.io/ios/app/traxxas-flight-link/id1071578728) | 3.6 (16) | Free | Entertainment | | [Robotics - Smart Machines](https://appshunter.io/ios/app/robotics-smart-machines/id998947235) | 2.3 (224) | Free | Entertainment | | [Brain / iKon / Xbar / TracX](https://appshunter.io/ios/app/brain-ikon-xbar-tracx/id968499281) | 2.5 (31) | $9.99 | Entertainment | | [Pioneer Music Control App](https://appshunter.io/ios/app/pioneer-music-control-app/id1254304644) | 4.4 (226) | Free | Entertainment | ## Related topics [lionel cab3](https://appshunter.io/ios/topics/lionel-cab3) · [boxcar](https://appshunter.io/ios/topics/boxcar) · [lionel](https://appshunter.io/ios/topics/lionel) --- *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 2026-08-09.*