Silent Passenger is an Android app developed by IntelliShift, a division of VTS. It is a free app available to all Vehicle Tracking Solutions customers. This app allows you to monitor your vehicles from anywhere and view their current location, as well as run historical stops reports on your vehicles.

The app is specifically designed for businesses with a fleet of vehicles, providing an easy and convenient way to keep track of their whereabouts. However, it is important to note that you must be a paid customer of Vehicle Tracking Solutions in order to use the app. With its user-friendly interface and real-time updates, Silent Passenger makes fleet management a breeze.