MenuVista
Free to download, one menu scan a day; a subscription lifts the limit.Turning a photographed menu into a list of dishes you can compare. It keeps the menu's own structure — starters, mains, drinks — and for each dish returns the original name, a translation, a plain description of what the dish actually is, its ingredients, allergen and dietary flags, an estimated nutrition breakdown and a photo. It will also show the dish name back in the original language, so you can point your phone at the waiter instead of attempting the pronunciation.
It needs a connection: menus are processed in the cloud, so there is no offline mode. It is not a live camera overlay either — you photograph the menu once and read the result. And it does menus and nothing else; for a train timetable, use something else.
You care what you are eating — allergies, dietary rules, an unfamiliar cuisine, or simply not wanting to order the third-cheapest thing again.

