This is a great learning app that allows its users to : create their own study notebooks and their study materials.
2- How Stuff Works
This is a app that lets users have access to tons of videos and podcasts, plus endless content from popular How Stuff Works sections.
3-iMathematics
This is a great app for studying mathematics with more than 120 topics , over 700 frmulas, attractive interface, with 8 solvers, and calculators and a special version for the iPad.
4- TED
This is TED official app. It provides talks from some of the world's most fascinating people: educational radicals, tech genuises, medical mavericks, music legends and many more.
5- History: Maps of The World
This is a fun educational collection of high-resoluton historical maps. It is designed to help users keep up with their history and learn more about world history.
6- iGeology
iGeology is for anyone who wants to explore their local geology, at street-level scale, virtually anywhere in the UK.
7- Molecules