The answer to 'who needs an app for that' is not so much the diner but the restaurant. Sure, you can call, but the restaurant doesn't really want to take that c

The answer to 'who needs an app for that' is not so much the diner but the restaurant. Sure, you can call, but the restaurant doesn't really want to take that call. They want to deal with the people who are in the restaurant. For these services, the restaurants are the customer, not you. For myself, one of the features I like is being able to search by area or type of food; you can check availability at a bunch of places at once.