I personally think the iPad app is fantastic. The ability to pull down search results and visually see their content was a great idea and I think this makes Axis much more appealing to use over Safari. I think I'm actually going to replace Safari with Axis for a while. It's a shame that you can't switch search engines, but I'm willing to give Yahoo search another shot.
On the other hand, I'm not really impressed with the Google Chrome toolbar. I think it's annoying to have something overlay my browser on every page I visit.
I haven't tested out the iPhone app yet.