Wolfram Alpha has announced that it'll be doing a Christmas deal on its mobile app for the iPhone and iPod.

The app, that launched back in October, has now been reduced in price from an original $49 to its new price of $19.99 - working out at just £11.99 for us Brits.

The fully functioning app will allow you to search for all your usual Wolfram Alpha queries within the context of the iPhone, allowing you quick access and an intuitive interface, along with integration to other iPhone services.

Possibly an ideal pressie for just about anyone with an iPhone, you'll be able to share the knowledge as well as the love this Christmas. The offer lasts up until the 31 December and is available now, to get the app just follow this link.