Mensa UPB is a beautiful and clear app for checking out the current menus of the restaurants of the University of Paderborn. The price, allergens and a thumbnail are shown for each dish with thumbnails being expandable to their full size.
The menus can be retrieved one week in advance, are grouped by the restaurants (Mensa Academica, Mensa Forum, ...) and sorted by the type of dish (main dish, soup, ...). Conveniently, the best-priced dishes are shown right at the top of the list.
The restaurants from Lippstadt and Hamm are also supported.
On top of all of this, there's also a widget for your homescreen.
Too long; didn't read: The app provides exactly what you need for eating in the University's restaurants every day!