A young man and a young woman stroll arm in arm under an umbrella in the rain, smiling and happy—perhaps about their eye-catching boots. This black-and-white photo with the word “endless” scrolling across sets the tone for what Amazon.com Inc. hopes is another successful addition to its vast collection of mobile apps. The young couple splash across the screen as a customer opens the iPhone app to gain access to thousands of shoes and accessories sold by Amazon’s Endless.com.

The app’s home screen presents nine bars delineating categories of products, everything from shoes to bags and jewelry to accessories. The Our Loves section of the app features a guest editor’s picks, a fall trend guide and a What’s New area. Customers can sign in with their Endless.com credentials and gain full access to their online accounts, which speeds mobile purchasing by using stored shipping and payment information.

Sub-category pages feature bold images of models wearing products. Product pages feature sizable images that can be blown up to full screen size. Bars for details and tech specs lead to considerable content, including in-depth profiles of the designers behind the products. A Share bar enables shoppers to send basic product details to friends via e-mail, Facebook or Twitter. And shoppers can read customer ratings and reviews.

“People are on the go more than ever, and whether it’s connecting with people, working or shopping, we spend a lot of time these days on our phones,” says Shelley Salomon, president of endless.com. “So we’re excited to be able to offer our customers the same seamless and luxurious endless.com experience no matter where they are.”

Endless.com offers free two-day shipping and free return shipping on U.S. orders and free shipping for international customers on orders of $100 or more. It was launched in December 2006 by Amazon.com, No. 1 in the Internet Retailer Top 500 Guide and No. 1 in the Internet Retailer Mobile Commerce 300.