QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
CoinList - Build a diverse portfolio of pre-launch token investments
2016 Photo Challenge - Take a photo every day for 366 days
Crypto Buyer's Guide - Extensive cryptocurrency buying guide
Woolah - Knockout Photo challenges with your friends.
CoinCap.io - Shows the prices of different cryptocurrencies from ShapeShift.