I don't use a lot of mobile apps, but I am absolutely in love with "Carton Food Seeker". You type in your zip code or address/location and then a price range of from $5 to $120, or whatever you want to spend, but $5 is the minimum amount, and then a type (up to three types in advanced mode) of food from the check-box menus (I use the main pre-sets, which are Chinese, Italian, Fast Food (ie Burgers and Fries, but also pulls in KFC too), Ethnic, Pizza, Vegan, Veg'tn, Lo-Cal, plus a couple others I never use so not sure what those are, they're down at the bottom), and BOOM!!
It uses the power of the Internetz to find delivery food...takes like 10-12 seconds usually. Once you pick a place, you can order by voice, or by text. Pretty sweet.
Carton Food Seeker. I forget who the developer was, but it was 99 cents from the App Store. Gawd I love my Apple products!