Snaptivity - Real-time photo sharing with the world nearby
Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.
Flashgap - Time-delayed photo-sharing app of last night's embarrassment
Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.
WiFi Map - A crowdsourced list of routers and passwords
A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.