TweetDeck - TweetDeck is your personal browser for staying in touch with what’s happening now.
QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.
A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.
HootSuite - Enhance your social media management with Hootsuite, the leading social media dashboard. Manage multiple networks and profiles and measure your campaign results.
Trivia Crack Kingdoms - The amazing quiz game that lets you test your knowledge and challenge your friends to see who is the smartest. Developed by Etermax