In theory, you can simply download these and install them yourself from the URL in the 1st post. The "about" page in the app instructs you to place downloaded maps in /opt/metromap/data. Not sure if Madrid etc. currently exist on http://metromap.antex.ru - as it's all in Russian (can't see an English version) and so it's hard for non-russian speakers to work out how to locate maps of interest :-( I guess you speak some Russian - can you advise if there is an english language option on that website ?

Moving on, I just installed this and a few points:

1) I changed from Moscow to London. The change took a very long time (seemed like several minutes ... at least long enough for the screen lock to kick in a couple of times) while "London" was highlighted as my choice but the option list didn't dissapear (and if I tried to click on the blurred background it would flip back to Moscow).

2) I eventually left it in peace and it did load up London - but the title bar still says Moscow

3) I think I may be very dumb, but having entered a random to/from journey, the app has put a dotted red line around both stations on the map, but I can't se any option to calculate a route (and there is nothing like the screenshot where an estimated journey time is shown). What am I missing?

EDIT - removed pointless feedback which related to an older version of the app