Google just released an update to its search app for iOS. Now it has the Knowledge Graph built inside, meaning you can ask it questions and it will answer right back.
So if you say “Who’s the president of South Africa?” it will just say “Jacob Zuma” rather than offering a bunch of results you don’t care about. That’s pretty awesome and way better than Siri, which seems to just search the web for the answer to every question you ask. [iTunes App Store via Google]