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With iPhone applications flying off the shelves, er, server (the App Store reached more than one billion downloads in nine months), there’s little doubt that apps are the iPhone’s best friend. And with 25,000-plus apps to choose from, there’s a little something for everyone, including our favorite -- the road warrior! Download these eight handy little programs, and everything you need to know to keep you on the go will be right in the palm of your hand.

1. THE CURRENCY CONVERTER Trying to figure out how many Bahraini dinar equal one American dollar or how many Turkish lira equate to a Swiss franc? This app has you covered -- it supports 85 different currencies from around the world. Free

2. HEY TAXI The days of whistling and flagging down a cab are over. Instead, hailing your ride is as simple as making a phone call. Using the iPhone’s built-in GPS, Hey Taxi locates the nearest cab companies in your area based on proximity and response time. View the list; then, call and reserve the taxi of your choice. $1

3. FLIGHTTRACK Wondering if the weather delayed your flight? FlightTrack will give you live weather updates and information about cancellations and delays. But the coolest feature is being able to track your friends, family, or even your own flights on a map. $5

4. URBANSPOON Whether you’re feeling indecisive or just wanting to try some new eateries, Urbanspoon’s slot machine of cuisines will make the decision for you. Just shake the phone until a restaurant of your liking appears. Using GPS technology, the app also allows you to filter by neighborhood, price, or type. Reviews from fellow eaters, newspapers, and bloggers are also included. Free

5. FANFINDER Avoid showing up in the wrong team’s colors by using the FanFinder to locate sports bars that cater to your favorite team. Travelers can use the search function to find a good spot for a couple of beers at any destination. Free

6. LINGUO Visiting a foreign country can be difficult, especially when you don’t speak the language. Linguo translates 25 languages and includes audio clips to help you say your phrase correctly. It can be used off-line and definitely beats flipping through the pages of a translation book. $4

7. WI-FI FINDER On the go and looking for Internet access? Wi-Fi Finder will show you the closest Wi-Fi locations and give you directions on how to get there. With a directory of more than 200,000 Wi-Fi locations in 135 countries, there’s sure to be one close by. You can also sort by the type of location (restaurant, bar, café, etc.) and cost. Free

8. WEATHERBUG ELITE With weather data for more than 45,000 locations worldwide, WeatherBug ensures you’ll always be dressed appropriately. Drop a pin on the map and see live conditions for that location. Full radar animation and National Weather Service alerts also help you avoid getting caught in the rain without an umbrella. $1

+ Seven Non-Travel–Related Apps We Love:

Times your brushing sessions and informs you when a new toothbrush should be purchased. $1

Has more than 2,000 recipes for drinks approved by experts. $3

Keeps track of daily steps and calories. $3


Allows you to “fly” to any location on earth and view satellite imagery of the terrain -- among other things. Free

Release frustration as super agent B.J. Blazkowicz. $2

Turns your iPhone into a police scanner and deciphers all those mystery codes -- 10-four. $1

As you’re driving, find houses for sale and their estimated prices. Free