Google is still the champion when it comes to search, but their iOS app has lacked a lot of the neat features that you can use on Android. A big update to the Google Search app has fixed all that though and brought improved voice search capabilities to iOS.
The update is pretty significant for iPhone 5 users and can be downloaded free via the App Store. The biggest update to the app is that users can now can use natural language to control Google Search as well as listen to Google Search dictate the results of your query back to you.