TeachFlow - interactive books, presentations, educational materials and exams.
Platform for creating interactive tutorials, presentations and books optimized for iPad. It is simple to use, but has a fairly wide range of functions. All part of the work on the creation of books held in the visual mode. Creating books does NOT REQUIRE specific skills and knowledge of programming.
There is also a part of with the exams in which you can create and run interactive tests. To do this, you can use several types of questions(Text/Photo/Video) and answers(Choose/Check/Text).
You can also set the examination time and the number of points for correct answers. After the exam is finished user sees the result.