I liked iExit when I reviewed it a couple of years ago at US$0.99. Now I like it even more. Added features, a nicer GUI, and it's free. Unlike most navigation and POI-based apps, iExit highlights what's just beyond highway exit ramps. If you are looking for food, gas, coffee, hospitals, rest stops, you name it, iExit will point it out.
The app has a new iOS 7 look, and 25 preset searches, but you can search for anything by typing in any description you like. Search results include a list of destinations, a one-touch call button, relevant web links, a Google Street View image and a directions button which lets you choose Apple Maps or Google Maps (via either the app or a browser).