The HST App, developed by Verkehrsverbund Rhein-Ruhr AöR, offers a comprehensive guide to public transport in Hagen and the entire VRR area. This free app provides up-to-date information on bus and train schedules and alerts you to any delays on your route.

The app features a range of functions and features, including a journey planner that allows you to select a start point, destination, departure or arrival time, and the mode of transport you prefer. You can choose between a graphical or tabular display of your journey, depending on your preference. The app also includes an "Abfahrtsmonitor" that displays the next departure times for all public transport options at your chosen stop.

For regular journeys, you can save your important destinations in the "Persönlicher Bereich" or personal area, and access important information at a glance. The app also offers a "Fahrradrouting" feature that shows you how to combine cycling with public transport for the most efficient journey.

The HST App is an essential tool for anyone traveling in the VRR area. It is easy to use and provides accurate, reliable information on public transport schedules and routes. While feedback and suggestions are encouraged, the app does not provide any developer contact details.