Oh man
Finally an app that’s just a bit reliable. I’ll take the programming oddities all day long. Feedback submitted.
Kid mode rules
Thanks for adding the turnout and route support and good work on the kid mode!

This app offers precise wireless control for model train operations, featuring intuitive throttles, customizable control surfaces, and comprehensive fleet management. It allows for detailed function control, macro creation, and CV programming, making it suitable for hobbyists of all levels.
1.4
August 11, 2026
Z21 support, and your whole library backed up to iCloud. A third command station protocol joins DCC-EX and WiThrottle, consisting no longer asks you to pick a mechanism, and everything you've built can now live in iCloud. DC operators get momentum and sound. And the app now speaks Swedish. Z21 SUPPORT (BETA) Signal Cab now speaks the Roco/Fleischmann Z21 LAN protocol: speed, direction, functions, emergency stop, and track power, plus pulsed turnout control and CV programming on both the programming track and the main line. Add a Z21 by entering its address. Roster, routes, command-station consists, and per-track power aren't part of the Z21 protocol, so those stay unavailable on a Z21 connection. CONSISTS THAT SET THEMSELVES UP Creating a consist no longer asks you to choose a mechanism — Signal Cab picks it from your connection, using command-station consisting on DCC-EX and virtual consists everywhere else. Command-station consists write no CVs to your decoders, and re-register themselves if a station reboot drops them. Route each function to the lead engine or the whole set, drag to reorder members, and swap the lead engine from the editor. Please note: the advanced consist option has been removed. Advanced consists won't carry over after this update and can't be migrated — recreate them as regular consists. ICLOUD BACKUP Opt in and your locomotives, consists, turnouts and routes, macros, speed profiles, station profiles, and settings back up to your private iCloud — automatically as you work, or on demand. Setting up a new device becomes a restore instead of a rebuild, and if a backup already exists when you turn it on, Signal Cab offers to restore it rather than overwrite it. Off until you turn it on. DC OPERATION Virtual momentum (Beta) eases a plain DC locomotive up to speed and back down like it has weight, with Switcher, Road Diesel, and Heavy Freight presets per locomotive. Stop and Emergency Stop are always immediate and bypass the ramp. Horn and bell now play through your phone on DC, since a DC locomotive has no decoder to sound them. NOW IN SWEDISH The interface is available in Swedish alongside English, following your device's language automatically. CONNECTION FIXES • DCC-EX command stations are now identified correctly instead of being treated as WiThrottle-only — the manual "Switch to DCC-EX" step is gone • Fixed a JMRI connection that could silently time out against a loopback address • WiThrottle sessions now recover instead of stranding when a server restarts • Save a station you're connected to, so it stays in your list when it's off the network • WiThrottle is out of beta ALSO IN 1.4 • Smoother throttle — every speed step reaches your decoder instead of every fifth • Show All / Hide All and sorting (last used, name, address, run count) in the layout roster browser • A live command station log with a raw-commands filter, for when you need to report a problem • Configurable turnout state colors — keep Mint/Grey or switch to Green/Red • Hide unmapped functions on station-synced locomotives • The top-bar speed readout honors your Speed Display setting • Disconnect fits properly on iPhone
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Signal Cab Throttle is a wireless Digital Command Control (DCC) locomotive controller designed for model train enthusiasts. It provides precise throttle control, fleet management, and advanced features like function control and CV programming.
No, Signal Cab Throttle is ad-free, allowing for an uninterrupted operational experience.
Signal Cab Throttle is available for iPhone and iPad, offering a seamless experience across Apple devices.
Signal Cab Throttle supports both short (1–127) and long (128–10293) DCC addresses. It also allows for importing existing rosters from DCC-EX and JMRI.
Yes, Signal Cab Throttle features a 'Kid Mode' that simplifies the interface to a single locomotive with four large buttons and caps the maximum speed. It also includes a password or Face ID lock to prevent accidental exits.
Signal Cab Throttle natively supports DCC-EX and WiThrottle protocols. It also works with JMRI, MRC, and compatible command stations. Support for Z21 / SRCP is coming soon.
Signal Cab Throttle offers two subscription plans: 'Monthly Ticket' for $4.99/month and 'Yearly Ticket' for $29.99/year. Both plans include a 7-day free trial.
Signal Cab Throttle was last updated on June 24, 2026, with version 1.1. This indicates a recent update, suggesting ongoing development and support.