CNBC has a great article listing some of David Pogue's favorite apps for saving money. They include Save Benjis ($1), an app for comparison shopping, iFare Finder ($3), which lets you find and order low-cost airfares, Amazon Mobile, a free service that lets you take a photo of a product with your phone and then sends back info such as where you can get it for the lowest price, and GasBuddy ($3), which finds the cheapest gas in your vicinity. Plus, the article has a video of Pogue in which he mentions a few more.
