Add legend: label each colored line with its number/name
AdminMatt Mayer (Founder, ExploreMetro) commented
Older versions of ExploreMetro had the number of each line shown at the end of the line. This wasn't ideal because you had to scroll to see it. In version 5.0 the labels were removed, instead you can press on a line to see the name of the line.
Clearly some people preferred the old behaviour. I'm investigating how best to solve this: possibly with a separate "legend" which appears on the map, similar to on our online versions (www.exploreshanghai.com). This would be always visible on iPad, maybe toggleable on iPhone to save screen space.