EducationApps of London is a fantastic resources for those with iPhones and some other Smart phones.
George Burgess has created a series of applications to help students revise and prepare for their different exams. From the UK 11+ through to AS Level and beyond. EducationApps is a fast growing company with new offerings appearing every month.
Visit EducationApps web site and discover the resources available and I strongly recommend that you book mark it as a favourite on your internet browser.
For more details contact EducationApps or George directly.