Voloco App - Auto Voice Tune and Harmony
Guides by Lonely Planet - Explore city guides curated by experts.
Questo - Play a real-world city game on mobile @ the best travel app
Foursquare City Guide - Foursquare City Guide is a Free to use mobile application that will lead you to the perfect spot anytime anywhere around the world.
World Brush - AR app where you paint on the real world for others to find
Lonely Planet - travel guide book publisher