We use YOYO to help manage our restaurant orders for in-house ordering as well out of house customers via their app or through phone calls/texts with an agent! It is easy enough that even I can order food without using my computer (although it does have some other really neat features).
The only thing we dislike about this software are its slow loading times when you first log into one page but once logged onto another they go way faster than most others do so no problems there at all!! Great product if someone wants something simple yet effective like us.