Vito Technology Inc. developers of the incredibly good and popular Solar Walk and Star Walk apps have asked us to organize a competition to celebrate the overhaul they have given to their unique app, Geo Walk – 3D World Fact Book. If you feel that encyclopedias are pretty boring and usually too overloaded with information, you will really appreciate this app. It manages to squeeze the most essential and exciting info about our planet into a brief, informative and illustrative 3D Fact Book to explore the world in a playful way. If you would like to win a gorgeous well designed and practical Solar Walk t-shirt, or perhaps a $10…