Google Wallet - Send money from anywhere to a friend in the US who has an email address.  Store loyalty programs in Google Wallet and leave the plastic cards behind.
Groupon - Find 50% to 70% off restaurant offers.
FlightTrack - Follow international flights with detailed information on departure gates, delays, and cancellations.
JetLag Genie - Gradually alter your sleep habits before a trip to better deal with jet lag.
myLanguage Translator Pro - Translate text into spoken voice.
Lemon Wallet - Allows user to store a digital copy of all cards – ID, insurance, loyalty, and payment card, so that they can be accessed whenever needed.
Opentable - Reserve tables and earn rewards at over 20,000 U.S. restaurants.
Zagat - A guide to discovering the best restaurants, bars, cafes and clubs.  Started with nine cities (Austin, Boston, Chicago, London, Los Angeles, New York, Philadelphia, San Francisco, Washington DC) with more on the way.
BestParking - Steers drivers toward the cheapest and most convenient garages and lots in 100 cities and 115 airports throughout North America.
Perfect World Clock - Provides easy access to the time in hundreds of cities adding several clocks as home screen widgets.
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.
iMuseum - A web tracker that searches via GPS the closest museums in your immediate area. Updates museum news and exhibition info regularly.
EHU - Helps campers and caravanners keep track of the electrical output of their assorted travel gadgets to avoid overloading the circuit.
Tipulator - Makes tipping easy even with split bills.
The Weather Channel - View current weather, hourly, 36 hour and 10 days forecasts.  Will forecast weather throughout the United States.