VdL is a free Android app developed by HOTCITY SA that offers a complete package of utilities and tools for city residents and visitors. The app is available in English, French, and German and provides an enhanced user experience with its increased functionality. With VdL, users can access real-time information on public transport, parking spaces, vel'OH! stations, cycle paths, and cycling routes. The app also offers quick-fire access to information on the city's services and news, including waste collection schedules and contact forms to report problems with the app.

VdL also provides widgets that allow users to personalize their home screen and access useful information such as upcoming real-time departures of trams and bus lines, parking space availability, and the quality of the air they are breathing. Users can also see when the Pfaffenthal elevator is open/closed, view upcoming waste collections, and obtain a weekly report on the quality of their drinking water. The app also offers a list of events based on users' preferences and points of interest near their location.