Yelp gained a loyal following by building a website for savvy technorati to shower praise or air complaints about local restaurants, bars, and retail stores. The service’s app merges this deep library of reviews with real-time location data. Perform targeted searches for keywords such as “ramen” or drill down and browse by restaurants, bars, cafes, and drug stores. Or, simply see what’s hot nearby. The interface uses large, easy-to-read icons and text. There’s no way to pin a favorite place to the home screen yet, though.