The following line networks are offline available (without any additional download):
• route diagram of Washington, D.C. Metrorail

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

Easy zoomable line network app for all from Washington and tourists!

Just some simple maps, which you can use offline for scrolling around, zooming in and out. The App has a few tabs with different types of transit maps.
The metro line network is also known as underground, rail transit map, urban tube map or public subway.

You can leave suggestions for improvement, ideas, wishes or simply feedback by e-mail or in the respective contact form on the following page: https://dieeinsteiger.blogspot.com/p/kontakt.html

Notices:
• Usable with phone and tablet with Android 4.4 (KitKat, API 19) to Android 13.0 (API 33).
• The content of the apps is not guaranteed to be accurate or complete.
• The embedded maps in this app be subject to the Creative-Commons license (CC BY-SA 4.0) and were created by chinese Wikipedia-User Sameboat (copyright holder).

Have fun in the Google Play Store, dieEinsteiger.