The Download Now link directs you to the Apple iTunes Store, where you can continue the download process. You must have an active iTunes account to download the application. This download may not be available in some countries.
From New Century Technologies:
SmartBars is a free mobile shopping app for barcode reading, price comparison and coupons. Scan EAN/UPC/ISBN or QR codes. Look them up online (Amazon, eBay, Google, etc.) or locally (BestBuy, Macy's, RadioShack, Staples, Target, Walgreens, etc.) for best deals. With SmartBars, you use your smart phone to scan a barcode. In just seconds, the best deals, similar products and coupons - online or in local stores - are presented in front of you, no matter where you are, when it is, and which merchants are.