By Brennan Joseph 1)  Find My iPhoneYou've lost your iPhone...now what? This Find My iPhone app has proved very useful by helping many users save time and money when they've misplaced their phone. Simply sign into mobileme.com and pinpoint the location of your phone in a matter of seconds. Save yourself the hassle of scrambling around the house looking under every couch.
2) WhatsApp MessengerWith this app you can enjoy group chats, send videos, images and voice notes for free with no international charges. WhatsApp is a cross platform smartphone messenger currently available for iPhone, Android, BlackBerry and Nokia phones. It's an easy way to keep in touch with friends, especially internationally, free of charge!
3) SquareAccept credit cards on your iPhone with no contract, monthly fees or merchant account required, with Square. Every user receives a free Square credit card reader in the mail. It's easy to use, safe and secure. Say that your friend owes you $10 but doesn't have any cash...fear not - Square can get you that 10 bucks off his card and into your account instantly!
4) FacebookFacebook for iPhone makes it easy to stay connected and share information with friends. Use your iPhone to access your Facebook account on the fly.
5) TwitterThe Twitter App allows you to keep up with news, celebrities and what your friends are up to when you're away from the computer. It makes it very easy for you to use Twitter anywhere.
6) ESPN ScoreCenterESPN ScoreCenter brings you scores, news and standings from hundreds of sports leagues around the world, making it easy to follow your favorite sports teams. With this app, you'll never miss another goal, pitch, basket, try, touchdown or wicket!
7) Google SearchGet the most advanced Google search experience for your iPhone, now with Google Goggles, Voice Search and My Location. Google Goggles searches by taking a picture with your iPhone camera and using image recognition technology to identify objects, returning relevant search results. Voice Search searches when you speak into your iPhone. My Location customizes results based on where you are.
8) RemoteWith Apple's Remote app, you can control iTunes and Apple TV using your iPhone over your Wi-Fi network. Choose playlists, songs and albums as if you were right in front of your computer or Apple TV. Think twice before you get up and go out of your way to DJ your next party.
9) Pandora RadioPandora never fails to surprise you with awesome music and some of your favorite songs. This app is your own free personalized radio now available to stream music on your iPhone. Just start with the name of one of your favorite artists or songs and Pandora will create a station to play their music and more music like it. 
10) Angry Birds FreeAre you bored and looking to kill some time? Angry Birds Free is the perfect app for next time you're waiting in the lobby of the doctor's office. This is an awesome -- and addicting -- game!