I'm not great at many things but I am proud to say that I never get lost, ever, I know exactly where I'm going (and where I am) at all times, like a human sextant, forging ahead using nothing but the stars and the horizon as my guide.
Anyone who knows me is probably thinking what complete and utter nonsense those previous few sentences are. I get lost, like a lot, mainly because I have a penchant for wandering off without a second thought.
That's all well and good if you've lived in a place for a long time and can easily find your way home, but not so much when you're a transplant in a big city like London or New York. That's where Citymapper comes in.