A very nice app, well implemented. Good to have something that works off-line. Lots more information on the map than on Apple or Google Maps including bus stops and landmarks, making it very good for tourists. Showing which way you are pointing is also helpful. Only small complaints are 1) the Metro stations arent highlighted on the map, so they are tough to find, and 2) the off-line search for an address or road is pretty slow. Otherwise, a "must have" map for travellers!
RyderDA about TicketLens: Tours & Activities, v5.3