3 Degrees of Wikipedia (iPhone)
A good excuse to waste time going down a Wikipedia rabbit hole. Explore articles by solving 3-degree connection puzzles and create puzzles for others. And it’s quite pretty.
News aggregator with a strong social element. Makes it easy to personalise feeds from news and social streams with a simple interface.
TiltShift Generator (iPhone, iPad)
Beautiful photography app by Takayuki Fukatsu (iTunes link). Make your photos look like miniature scenes.