BusLive

This is an independent app but uses the data published by the cities on their websites. Keep in mind that it's not an official source of knowledge and the data might be inaccurate.

Check where is your bus or tram, the best app that helps you to travel around the city.

Supported cities:

Edinburgh (UK), Malaga (ES), Rome, Torino (IT)

Poland:
Cracovia, Gdansk, Lodz, Poznan, Wroclaw, Warsaw, Upper Silesia (Katowice, Chorzow, Gliwice, Zabrze, Bytom) and many others.