Google Catalogs
google.com
google.com
Interesting to see that they've revived it as an iOS tablet-only product. It does make sense that the tablet crowd would have higher disposable income than the general internet population. Given the emerging popularity of eBooks on tablet-style devices, catalogs are the logical next step.
^ You can always delete your data, at least for the given list of products.
Maybe if more apps like this started showing up on the web that opinion (of what is webby) would change, but for now it's the right style for the medium they chose (or the right medium for the style they wanted to convey).
FWIW, I love the app, I wish it had more catalogs I shopped from.
But, I guess online shopping and Angry Birds is the real objective.
Since this has been tried lots of times and no one has done it successfully yet and there's just not that large a market for this it may not have made sense to focus a lot of cutting-edge web engineering prowess at this.
I am surprised that they didn't try to make this "web-based", but if you're going to launch a product like this as a native application, it would be downright foolish not to do so first on the iPad.