Bus lines in Germany too, to take perhaps an unexpected area.
The official and unofficial transport apps don't tell you the bus will be at platform 16 on a completely different street. Made me miss the bus more than once, the second time I planned time for it but it took me 20 minutes to find the stop. I assumed it was one of the first fourteen stop positions and I just overlooked it, went around again (inside, on the street, other side of the street...), still didn't find it, until I checked OpenStreetMap which just shows it on a map and gives the exact stop position instead of only the stop name.
The latest version of OsmAnd can even do public transport routing. It won't give you timetables that are subject to too frequent changes, but it's still impressive.
