ShopSavvy was one of the first bar-code scanners to hit the Marketplace and it has quite the following, mostly because of its super "deal finder" capabilities. Sure, in Windows Phone Mango we actually have this feature built into Bing Vision, but ShopSavvy ain't half bad either.
Now with version 1.8, ShopSavvy finally goes to Mango, making it reach its full potential by giving it live-scanning ability. In addition, you can now pin new scans directly to your Start screen, which is a great way to (a) remember you wanted that item or (b) quickly check on internet and local prices to see if there are any changes.
The app's scanner is quite nice, using the flash when necessary and performing as good if not better than Bing Vision. We easily found the lowest prices for our items with little effort, although the local-mapping feature leaves a lot to be desired (despite being a good idea). Actually, one of the most useful features is the "Deals" area which highlights specials going for major chains like Target, Macy's, Best Buy and more.
Of course it's a free app and we're not too sure how it performs in other countries, but with the Mango update, it's well worth a spin. Pick it up here in the Marketplace.