iOS: Google has updated its Google Search app to include a bunch of Google Now features, providing live weather and traffic updates, restaurant suggestions, and lots more.
The iOS version of Google Now is embedded into the Google Search app. Google Now is about pulling live information from your Google account to provide you with relevant information for your day. This includes traffic updates based on your calendar, or sports scores based on your location. In the Google Search app, it does this by showing you various "cards" when you open up the app, and tracking your day over Wi-Fi.
The iOS version of Google Now isn't nearly as functional as the Android version, as it's missing certain features like nearby events, activity summaries and boarding passes, but it still manages to get a lot of info into the app. The Google Search app is available right now for both the iPhone and iPad.