Cost: Free

Shopping for stuff on Zappos -- the speedy-delivery, online market place that Amazon ( AMZN) bought in 2009 -- is now easier thanks to its iPhone app. Much like they do at, users can browse footwear, clothes, beauty items and housewares by entering keywords ("red flats") or tapping categories ("chef's tools," "what's new").

After logging in with their Zappos username and password, repeat shoppers can look up account details, check the status of current orders, place an order and view their saved "favorites" list.

The app is intuitively and cleanly designed, making it easy to narrow results of wide-reaching searches -- just tap the wrench picture, which pulls up ways to filter and sort the list -- see alternative views of the products (double-tap the item) and find reviews from other buyers.

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