The DB Mitfahrer app offers the possibility to find passengers with the following country tickets and thus reach the destination more cheaply: Baden-Württemberg-Ticket, Bayern-Ticket, Brandenburg-Berlin-Ticket, Mecklenburg-Vorpommern-Ticket, Lower Saxony- Ticket, Rhineland-Palatinate / Saarland ticket and Schleswig-Holstein ticket.
Just enter start / finish station, travel date and immediately all existing groups will be displayed for this connection. If there is not yet an appropriate group for your destination, you can start your own group with just one click and add up to 4 passengers.
The DB Mitfahrer app offers, in addition to a chat function for quick exchange with each other, also an evaluation function of the individual passengers. In addition, you can add your favorite riders as favorites - this increases the chance that you will always find reliable travel partners.
All information about the tickets can be found here: https://www.bahn.de/p/view/angebot/regio/laender_tickets.shtml
Have fun with the DB Rider app & a good trip!