The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From TourBuddy Systems:
Rachel Zoe gushes "If you have yet to discover this luxurious brand for yourself, trust me when I say it will forever change your life behind closed doors." Keep Me is the best range of women's basics and loungewear on the market today and once you try one piece, you too will be "OBSESSED"!The Keep Me app will show you all our great styles and colors and has great gift ideas for you to share. You can email and tweet your friends about what you've found and help us spread our best kept secret--that every woman needs at least one piece of Keep Me! You'll get insider deals and discounts and be the first to know when we launch our capsule collections.