Apps Uses

Bussiness	Whether you’re managing projects, clients, or your time, iPhone makes the perfect business partner.
Travel	Oh, the places you’ll go. And the sights you’ll see. Worldly travel apps help you discover the perfect vacation, book your flight, and learn a language.
Sport & Fitness	Whether you’re training for a marathon or just trying to stay fit, there’s an app to improve your performance and get you closer to your goal.
Social Networking	Stay connected with friends and let them know what you’re up to with apps that make networking more social than ever.
News	Stay in the know with informative apps that are always first on the scene, wherever news breaks.
Lifestyle	Whether you’re searching for a great recipe to impress the in-laws, looking to reserve a rental, or checking if it’s a good day to go surfing, there’s an app that fits your passion.
Games	Fly higher, race faster, be a hero, or solve a puzzle. With gaming on iPhone, you’ll find hundreds of thousands of different worlds to explore — and you’ll see why we’re not just playing games with you.
Entertainment	Shoot a vintage-look movie, write a song, or just kick back and catch up on your favorite shows. iPhone apps are all about entertainment.
Education	Whether you’re studying for that big exam or making a little time for extracurricular activities (the productive kind), educational apps for iPhone put you at the head of the class
Family & Kids	Every parent could use a hand. Keep up with your kids or just keep them busy with family-friendly iPhone apps.
Music	Nowadays, it seems like everyone is a musician. And with apps like these, it’s no wonder. If you’re looking to create some block-rocking beats or turn your talk into fresh tracks, iPhone can make you the next big star.

Reference:http://www.apple.com/iphone/from-the-app-store/