Speaktoit Assistant (iOS) app for $0.99

Speaktoit Assistant is a virtual buddy for your iPhone or iPod that uses natural language technology to answer questions, find information, and connect you with various web services, such as Google, Facebook, Twitter, Foursquare, Evernote, and many others.
The Assistant works with your device to get maps, search for news and images, look up weather reports, convert currency and measurements, send email, and much more.
No need to memorize special commands or complex interfaces - simply speak or type in everyday language and the Assistant will understand and respond with what you need.