download the whole thing

all the functional parts are server calls, app or website. all of them. buying a ticket involves authenticating with both the owner's server and my bank. that's a network thing. can't download my ticket til I do that, site or app. even looking at a timetable (i dont see where in the app I can do that? but point to point trips) on the app doesn't work when im in airplane mode, but I know for a fact my browser caches, and if I've looked recently or left the page open, it will still be there when I come back.

there's no advantage of an app, unless you're doing fancy graphics shit, which eats battery like a mother fucker and makes low end devices much more unhappy.