A free app for Android, by ioki.
The RMV On-Demand-Shuttle is an all-electric, digital and on-demand shuttle service that lets you pick up and drop off in eight areas in the Rhein-Main-Verkehrsverbund area. You can use the app for ordering the RMV On-Demand-Shuttle to pick you up at the bus or train station, and for tracking your shuttle as it’s on its way to you.
When you use the RMV On-Demand app, you can choose from a variety of different routes. You can find the full details for the different routes in the app. When you order your shuttle via the app, you can see all available vehicles and the departure time of your desired bus or train. After booking, you will be redirected to the stop near the start of your route where you can check in and pay for the ride.