The Zappos app for iOS is a joy to use, featuring an easy-to-navigate interface and lightning-fast search results for your shopping needs. The app features categories running down the left side, a featured section in the upper right (with a rotating carousel of deals), and a few featured items on the bottom.
Zappos originally started out on the Web selling shoes, but since then it has added a few more categories, such as clothing, bags, beauty supplies, and housewares. Touching a category on your iPad brings up icons so you can drill down farther (touching shoes, for example, brings up categories like Men's, Women's, etc., with colorful icons), and once you're looking at products that fit your criteria, you're presented with large pictures that are easy to browse through by swiping your finger. Even when you go to an items main product page (where you view pricing, sizes, colors, etc.), you can preview the item in a big window on the left, and swipe to see different views of the product. Every action is smooth and immediate, which makes us think the Zappos people wanted to get this app just right and it shows.
Overall, even though Zappos is limited to certain shopping categories, the app is so well made that you'll probably want to use it as much as possible. With quick response times and an intuitive layout, Zappos is one of the best big-store apps in the category.