Source : http://www.macworld.com/
15 great uses for GPS on the iPhone
Clever apps that make the most of your phone’s location features
Travelers used to need a guidebook, map, local newspaper, and much more just to cover the basics of getting around an unfamiliar city. Today, location-aware apps on the iPhone can not only replace all your city guides, they can do a better job of helping you interact with the world around you-whether you’re just in town for the weekend or you’ve lived there your whole life.
Find Nearby Friends
View where your friends are at a glance and see what each person is up to with Loopt.
Make Your Escape
Surf Report is a one-stop source for coastal weather, wave conditions, water temperature, and more.
Avoid Traffic Snarls
Never hunt for the best gas prices again with GasBag.
Conjure a Cab
Tired of waiting on a street corner hoping a taxi will drive by? RideCharge’s free Taxi Magic will find the closest cab, place an order with the cab company, and show dispatch updates as the taxi makes its way to you. It even has a cancel order function, so you don’t have to sit and wait for the cab you called if another passes by first.
Get a Personal Trainer
Distance Meter Pro lets you track your running time, distance, pace, route, and burned calories.
Be Your Own Tour Guide
See photos and Wikipedia entries on a map to learn more about your surroundings.
Get Truly Local News
If you want breaking headlines from the neighborhood, the freeAP Mobile News Network app will fetch news from your current location. However, sometimes events move faster than even the Associated Press can keep up with. If you want to know, for example, where all that smoke is coming from, or why a line is forming outside the building across the street, atebit’s $3 Tweetie lets you filter Twitter posts by location, so you can view all the tweets posted within a 2km radius even if your contacts didn’t write them. During times of crisis-or just at large local events-it can be an invaluable tool for keeping informed.