If there is only one app you download for your iPhone make sure it's the Google iPhone app. Developed to intergrate all of Google's best services right onto the iPhone making it easy to check your Gmail or do a Google Search.

Google Mobile also provides those non-profits and charities using Google Apps easy intergration with the calendar, email, docs and chat.

Probably best feature of Google Mobile is the Voice Search, click the Mic button and speak the keywords you are searching for and Google will do the rest and you never had to touch the keyboard. All searches voice or typed can be location aware so when you say "Taxi" or "Delivery" Google will show you results closest to where you are first very cool!

Download Google Mobile  now from the iTunes store