Name: Khan Academy
Category: Instructional Videos, Learning support
URL: https://itunes.apple.com/us/app/khan-academy/id469863705?mt=8
Since 2006 Khan Academy has been helping learners get direct access to some of the best instructional videos in the web. The new Kahn Academy mobile app for iPad brings the entire library of over 2700 videos right to your iPad device. These videos are even downloadable to be viewed off line.