Dont miss a good deal, or get ripped off again, with Google's new app…

Ever bought something and realised you could have bought it down the road for £20 less? Im sure most of us have, I certainly know I have, but Google have developed a new app which allows you to quickly check youre getting the best deal when youre out and about. Not only that, it even scans barcodes for you, and takes pictures of book covers, how easy is that?! But most importantly, its free. Surely its a must have? I know Im impressed…