In addition to making the thousands of videos from Khan Academy portable, this app adds social features which will allow the user to interact with Facebook friends, ask questions on the discussion forum, and see how others rated a particular lecture. You can even takes notes on a lecture and review them which watching the video again.
[The Khan Academy app] uses the VIRT2GO mobile video platform created by Irynsoft. VIRT2GO offers a new way to view educational content on your mobile phone. It makes learning a social experience allowing users to update and keep tabs on their Facebook friends, to post to a forum, and to leave ratings and reviews of individual videos.
Khan Academy: A Classroom in Your Pocket is free and compatible with iPhone, iPod touch, and iPad. Requires iOS 3.1.2 or later. Download Khan Academy for iPhone, iPod Touch and iPad.