Chrome Apps also work offline without an internet connection, so there's no need to stay connected if you really don't need to or really can't. (thenextweb.com)
You can also do the thing which works offline with your companion app, which you can download. (pointandclickbait.com)
The best part is the app worked offline, so we could easily check for other train schedules if we arrived in a place early. (adventureinyou.com)