Official jakdojade.pl application for Android.
Get quick and convenient to:
+ The most accurate search engine for public transport connections
+ Current timetable (ZTM, MPK, MZK, SKM, PKP PR, …)
+ Personal GPS navigation for public transport!
And much more in the premium version (try first month free):
+ No ads
+ Full navigation
+ Departures from the nearest bus stop
For More Info Google Play
varies with device