Passbook - Passbook is an application in Apple’s iOS that allows users to store coupons, boarding passes, event tickets, store cards, generic cards, and other forms of mobile payment.
EHU - Helps campers and caravanners keep track of the electrical output of their assorted travel gadgets to avoid overloading the circuit.
Touchnote - Send real postcards using cell photos.
FlightTrack - Follow international flights with detailed information on departure gates, delays, and cancellations.
Schemer - Google’s test crowd sourced travel guide.  Users leave recommendations for things to do in their city and visitors can add to a to do list and check off as they go.
Yelp - Find places to eat, shop, drink, relax, and play and read reviews from knowledgable locals.
Ski & Snow Report - Get the latest ski reports with detailed trail maps.
mTrip - Provides travel guides around the world, offline maps & navigations, personalized itineraries of visits, and trip journal and sharing.
FlightAware - Track your flight by entering your airline and flight number and receive updates on flight delays, gate changes, and/or 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.
AlpineQuest GPS Hiking - Comprehensive orienteering maps come complete with contour lines.
Evernote - Take notes, capture photos, create to do lists, record voice reminders, and make these notes completely searchable. Users can combine and share travel notes.
XE Currency - Quotes live currency rates.
Wi-Fi FInder - Directions to your nearest source of wireless internet. Comes with an offline mode so that users can download maps.
Instagram - Coverts photos into works of art. Instagram gives photos professional, antiquated, or artistic looks. It makes sharing pictures across social media networks easy.