Sygic Travel Maps - Itinerary planner for independent travelers
Detour - Immersive audio walks, now in 17 cities
City Walks - A platform that you can virtually wander around the world.
Foursquare 10 - Your ultimate city guide, in your pocket
Virtual Museums - Explore the world's museums, virtually.
Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.