Talon for Twitter - Elegantly designed, ad-free Twitter experience for Android
QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
Janetter - Janetter is a Twitter client application. Faster, smarter, and more powerful.
A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.
Echofon for Twitter - Download Echofon apk 3.1.3.3 for Android. Echofon for Android - A super clean Twitter app
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