Google Now is now available on iOS as a free update for the popular Google Search app. The iOS app recognizes voice and actually looks hotter than its Android peer (the cards have a nice Cover Flow-like view), but can’t quite match the functionality of the Google OS version.
Google is also working to bring some voice functionality to its desktop website. While Google Now has a voice component that has been compared to Apple’s Siri on many occasions, the essence of the feature is truly to provide timely, location based information.
Google Now for iOS still pops up cards depending on your search history, preferences, etc. It will give you weather and traffic reports, will keep track of your favorite sport teams, etc. It will also remind you for stuff you have in your Google calendar.
To experience Google Now’s complete functionality you’ll need to use Google services instead of the iOS defaults, though, which might be a bummer for some.