What do you think about "Quiz me on S.E. (Software Engineering)"?

I just came across this application while browsing the web and I am wondering how good this application really is? The publisher description sounds quite promising to me, but what do you think about? Any experiences with it? Easy stuff or really challenging problems to solve?

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Publisher's description
From Eddie Burris:

You call yourself a Software Engineer, but how much do you really know about Software Engineering? Find out with Quiz me on S.E., a quiz program for assessing and improving your knowledge of Software Engineering. The free version of the app offers 30 questions across 3 knowledge areas: Introduction to Software Engineering The Software Development Process Agile Methods The main features of the app include: Ability to work offline. Once the app is installed, you can take a quiz and get feedback on your answers without an active Internet connection. Ability to start and stop a quiz at any time. Ability to answer questions in any order. A statistics page that shows intermediate progress and final results. Option to view a brief justification or explanation for the answer to each question.