Vienna Transit Maps is a free Android app developed by Topobyte.de. As the name suggests, it provides maps of the public transport system in Vienna. With this app, you can easily navigate the city using public transportation. The app includes maps for rapid transit, the city plan, nightline on weekends, and nightline on weekdays.

The app is perfect for tourists and locals alike who want to explore Vienna via public transportation. The maps are easy to read and provide all the necessary information for a hassle-free journey. The app is also user-friendly, with a simple interface that makes it easy to find the information you need. Overall, Vienna Transit Maps is a must-have app for anyone who wants to navigate Vienna's public transportation system easily.