Official Google Blog: Google Mobile App: faster, easier search on iPhone & iPod Touch
For iPhone and iPod Touch, Google free downloadable iPhone application which make fast searching with great easiness.
All we all know that we cant type that fast on mobile Phone or iPhone as we do with keyboard so, what Google app will do is that what ever you pass few keys of your word it will suggest you what you looking for automatically with smart feature reducing pain to great extent.
Google has also bought Google search for you iphone contact search. well this feature are currently available for US iPhone users only.
How to get it: Tap the App store icon or make a search of Google App on your iPhone, start using.