Engine Driver Throttle is an Android app developed by mstevetodd. This app is designed for model railroad enthusiasts who use JMRI, MRC Wifi, or Digitrax LnWi. It allows you to connect to the WiThrottle server and control up to six DCC locos or consists. You can control the direction, speed, and up to 29 user-configurable functions. Additionally, you can control turnouts, routes, and power. Engine Driver Throttle also provides access to the JMRI web server.

To use this app, you need to check the website for prerequisites, setup, operation, and support. The app is available for free and is categorized under Lifestyle. Overall, Engine Driver Throttle is a useful app for model railroad enthusiasts who want to control their DCC locos or consists through their Android device.