Google Mobile was a solid app (but not particularly essential)-and then came voice search.
It's a natural thing for a cellphone-tap a button, say what you want, and there it is. You can search the web, local results-everything the Google app could previously do. And thankfully, it knows the difference between "bare ass" and "bear market."
From The App Developers: Get the most advanced Google search experience for your iPhone, now with voice and My Location.