Essential Social Networking Apps

• One of the most popular apps is Faceobook, which lets you access that ubiquitous social network on the go. Another necessity is Twitter, which allows you to tweet from anywhere. Finally, Foursquare lets you check in to any location and let your friends where you are.
  
  

Essential Productivity Apps

• Productivity apps helps you accomplish your daily tasks. Evernote is very popular to take notes or record audio. Things or OmniFocus are great task managers. Dropbox is crucial for file storage and sharing.
  
  

Essential Games

• Angry Birds is a must have game. Cut the Rope, Tiny Wings, and Fruit Ninja are also popular. If you're a fan of retro arcade games, you must get Space Invaders and Pac-Man. If you like word games, there's Scrabble and Words With Friends.
  
  

Essential Photography Apps

• Instagram allows you to easily add filters to photos and share them with friends. Path lets you share photos, but just to a limited number of people. Adobe Photoshop Express lets you easily edit photos right on your phone.