Where To? - Enables user to locate almost anything nearby, including the nearest ATM, burger joint, and medical provider. 
Opentable - Reserve tables and earn rewards at over 20,000 U.S. restaurants.
Urbanspoon - Shake your phone and the Urbanspoon slot machine will suggest local popular east via the GPS in your phone throughout the US, Canada, UK, and Australia.
Livingsocial - Find 50% off restaurant offers.
FlightTrack - Follow international flights with detailed information on departure gates, delays, and cancellations.
Air Sharing - Turns your iPhone into a wireless hard drive, allowing the user to quickly load documents at the airport that can be viewed in flight.
JetLag Genie - Gradually alter your sleep habits before a trip to better deal with jet lag.
RoadNinja - Always know what is coming up at the next exit and compare gas prices at upcoming exits.
Pin Drop - Allows users to drop GPS pins onto a map while traveling of interesting spots or review user made lists recommending the best sights, sounds, and flavors in town.
Trip Journal - This virtual travel scrapbook will also create maps of your various explorations as long as your GPS in turned on, geo tagged with pictures, videos, and notes.
mTrip - Provides travel guides around the world, offline maps & navigations, personalized itineraries of visits, and trip journal and sharing.
World Clock - Time Zones - provides easy access to the time in hundreds of cities and adding several clock as home screen widgets.
XE Currency - Quotes live currency rates.
HearPlanet - The world’s largest audio guide pulls information from Wikipedia and its own database. Similar to audio guides handed out at museums.
AlpineQuest GPS Hiking - Comprehensive orienteering maps come complete with contour lines.