Wikipedia
ShopSavvy is a mobile application for shopping that scans products and finds online and local stores providing those products. Additionally, ShopSavvy compares the prices, displays user reviews, and searches for deals and discounts on scanned items. The app was developed by Rylan Barnes, Jason Hudgins and Alexander Muse, who won the “Google’s Android Developer Challenge" and subsequently founded ShopSavvy, Inc.
By 2012, the app had approximately 20 million downloads and over 10 million users since its launch. Today ShopSavvy is the world's most popular shopping application with more than 100M downloads of the technology, with over 50 million product scans a month.
ShopSavvy is a cross-platform application. It is currently available for Android, iOS, Symbian, and Windows Phone devices.