I just tested a review copy of Mezzoman (available in the App Catalog), which is designed to help two (or three) people "meet in the middle."On the whole, it seems to be a simple and useful app, although it has some limitations that are worth knowing about.
The essence of Mezzoman is very simple: the user puts in his own address (or uses current GPS coordinates, requiring location services to be turned on), and one or two (for the paid version) other addresses, enters a search term (I tried two searches, "kosher" and "bowling," since the program is not limited to food genres), selects a search results radius (apparently in miles, although it does not specify units), chooses from either review site Yelp or Google as a search tool, and hits the big "Mezzoman Go!" button at the bottom of the screen. The Mezzoman client will search for businesses meeting the search criteria in the radius around the midpoint between the two addresses.