Official jakdojade.pl app for Android.

Get quick and convenient access to:
– The most accurate search engine for public transport
– Current timetables (ZTM, MPK, MZK, SKM, PR PKP, …)
– Personal GPS navigation for public transport!
– Public transport tickets

And much more in the premium version:
– No ads
– Full navigation
– Departures from the nearest bus stop
– Widgets on the desktop