Detour - Immersive audio walks, now in 17 cities
Streets of Food - Trusted guides to the world's best street food
Sygic Travel Maps - Itinerary planner for independent travelers
FoodMarble AIRE - Track how well your body digests certain carbohydrates by measuring the hydrogen levels on your breath.
Flamyngo - Create a city guide with help of your friends.
WhatsMyFood - Personal food review tracking made easy