I like all of these and would add one myself that I stumbled on the other day - Gamebook Adventures: Temple of the Spider God. Good for decision making and risk taking as well as a great book for getting boys to read. Enjoy!
Read the full article: http://speirs.org/blog/2011/10/30/ambitious-ios-apps.html
See the list of Apps: https://docs.google.com/ambitiousappsspreadsheet
You have read this article with the title Ambitious iOS Apps - Fraser Speirs. You can bookmark this page URL http://singedwingangel.blogspot.com/2011/11/ambitious-ios-apps-fraser-speirs.html. Thanks!