In the latest version of the Google Search App for iOS and Android, not only can you say your question out loud, but your search app can speak your answer right back to you. And, using Google’s Knowledge Graph, your search app gives you smarter answers loud and clear.
This sounds just like Siri and Google Now, complete with contextual awareness. The app is not out yet: it’s coming in a few days. When it is, it will be available here in iTunes.