Travel Technology - iPhone Apps for a Traveler ???

Hello mates, I need some suggestion on this, I'm looking for the list of apps which are useful and pretty necessary for a traveler? Because I'm going to write an article for a blog(friend). Please suggest me.

Pretty open ended question . . . can you refine?
Airline apps
Currency apps
Map apps
Guide apps

Individual Airline apps and Alliance apps
Travel Agency apps
Map apps
Currency Converter
Hotel Chain apps/Hotel ventor apps
Travel Insurance apps
Yelp(or equivalent)
Translator
Tripadvisor
Car Service apps

Car Service Apps??? which are these? Really I got the ample opportunity :P

http://www.androidzoom.com/android_applications/car+service

just for starters. Good searching and writing.

Flight Trackers
Airport Apps

(Find out where your flight really is/has left/is expceted)

Car Service Apps??? which are these? Really I got the ample opportunity :P

I use TaxiMagic - Not exactly car service but same purpose.
Uber by Ubercab - Limited cities but growing

I use TaxiMagic - Not exactly car service but same purpose.
Uber by Ubercab - Limited cities but growing

How would you rate taxi magic?

Yelp/Zagat - for businesses/food.
Trip it - to plan trips.
Gas buddy - if it's a road trip.
Kayak - if I need to plan a quick flight/book a room on the go.
Weather channel - Need to know the weather!
Bank/CC app - I know they aren't really travel apps but nice to be able to log in on the go and check finances.

How would you rate taxi magic?

I've used it twice so far (in Boston) and it has worked great both times. I set up a pickup time the night before, automated call goes to your cell phone when the cab arrives. You can punch numbers on the phone to let the driver know how long to wait. Home address is saved for reuse. It sure beats having to call early in the morning and talk to a dispatcher. Highly recommended.

Worldmate is another trip organiser. Its been around for years.

Destination Guides. Some of the tourism boards like Hong Kong have decent apps.

Airline apps

Skyscanner for flight comparison

Travel zoo for deals

HotelsTonight and Hotels.com for hotels

You may want to read the sticky thread (http://www.flyertalk.com/forum/travel-technology/848219-favorite-iphone-ipad-applications.html) at the top of this forum.

I have:

GateGuru
Tripit
FlightAware
AtoBPro
Kayak
PF Free
TripAdvisor
Currency
SeatGuru
Navigator from *A

Not to be a broken record, but the following are great apps:

TripIt - Essential for keeping track of iteneraries.
SeatGuru - Seat configurations for aircraft
AroundMe - Provides list of amenities (bars, hotels, banks, grocery stores, gas stations, etc...) that are within range of you using the GPS feature of the device to determine location.
Routes- Allows for creation of route maps
TripAdvisor
Hear Planet - Provides audio guides to locations near you. Determined by GPS location.

Hi!Thanks! Please check on this website, there are info http://travel-insurance-planet.com/

ZAGAT app is a MUST. Tells you of all the good restaurants around.

Don't forget about foursquare ;)

ExpertFlyer just released an iOS app for their Seat Alerts service for airline flight seat maps based on specific flights. It's free and so is the basic Seat Alert service. I suspect an Android version will be coming soon as well.