There are so many iPhone shopping assistance apps that I’m not sure the world needs yet one more. However, Google thinks that its Shopper app is something iPhone users want. So, an iPhone version of the app was released this week.
You can search for products using typed text, photos (including barcodes) and voice search (ask it outloud). The app is free and is compatible with the iPhone 3GS and 4 according to Google’s announcement. Its iTunes product page notes that it also works with the 4th generation iPod touch.
Google Shopper (iTunes App Store)