Excellent

A really, really good and functional app. I would say the only shortcoming is, there is a lot to learn and find out. To use this app to its fullest you really need to learn some of its nuisances to get the most out of it. The learning curve is just a little confusing. A quick video by them to show how you should set up a days commute most efficiently would benefit all. Also in the video to show you what your other options are and why you may or may not want to use it.
Probably the most confusing part is when you have to walk somewhere.
A lot of work went into this and the company should be commended.
Oh, and their updates are always worth reading!! Really, they are.

BellMartin about Citymapper: All Live Transit, v6.8.1