Detour - Immersive audio walks, now in 17 cities
Tripcast - A living travel journal for your friends back home.
Photo Find - Navigate to the exact spot a photo was taken
Journyal - Journyal helps you to automatically record your travels, be it backpacking trips, hikes, overseas travel, or even food trails. Simply press start and take photos as you would along the way, and Journyal will help you keep track of everything.
NoFilter - Discover great photo locations all over the world.
Firef.ly - An app that's your local guide and intimate travel journal.