Google Now, a proactive personal assistant, available for iPhone, iPad - latimes.com

Advantage, Android, for Now

"However, the iOS version of Google Now is not as complete as the version on Android. For example, the iPhone and iPad Google Now version will not provide users with information about concerts or nearby events. The iOS version also cannot provide users with their boarding pass if they have an upcoming flight.
Additionally, users cannot get push notifications from Google Now. Instead, users must tap on the Google app every time they want to see the latest information provided by Google Now."

Google Now, a proactive personal assistant, available for iPhone, iPad - latimes.com