Foursquare - Foursquare is all about helping you find new ways to explore your city.
Purp - A smart to-do list and goal tracker app
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.
Nirow - Habit tracking: Automated, Siri-ed, Calendar-ed, and More!
Yellow Pages - YP.com local search connects you with over 19 million local businesses.
Things - Things is an easy to use task manager.