Use Your iPhone to Comparison Shop in a Store

SnapTEll for iPhone
 

If you know the feeling of returning home with a brand new purchase only to discover that you could have bought it 20% cheaper at an online retailer, here is a product for you.

Download the SnapTell app for your iPhone (or the Android platform). The app supports image recognition as well as barcode scanning.

So just scan the item you are interested in buying in a store and compare prices to decide whether it's economical to purchase it in that store.

You can also take a photo of a book cover with your phone and use the image recognition function on SnapTell to pull up comparison pricing.