ShopWiki, which operates an Internet shopping search engine, said this week that it has released a new, barcode scanning app for iOS. The site--which is owned by Los Angeles-based Oversee.net--said the barcode app lets users check online prices while shopping at brick and mortar retail stores. The app allows users to scan the UPC for a product, and then instantly see competitive pricing from online retailers. Among features of the software are support for a wide range of international stores, including pricing in the U.S., Canada, England, Ireland, Germany, France, Holland, Spain, Belgium and Australia.