The following line networks are offline available (without any additional download):
• Underground, urban and regional rail network (Tariff area Berlin ABC)
• Tram network (metrotram and tram)
• 24-hour-network (metrobus, metrotram, subway and night bus)
• Regional rail network Berlin/Brandenburg (regional railways)

https://www.facebook.com/203994253076876
https://dieeinsteiger.blogspot.com

Notices:
• Usable with phone and tablet with Android 4.1 (Jelly Bean, API 16) bis Android 10.0 (Q, API 29).
• The content of the apps is not guaranteed to be correct or complete.
• The embedded maps in this app be subject to the Copyright of the cartography Berliner Verkehrsbetriebe (BVG) and the Verkehrsverbund Berlin-Brandenburg (VBB).