The New England Journal of Medicine's Image Challenge is now available as an iOS app. The app description says it all:
The NEJM Image Challenge App brings a popular online feature for medical professionals to the iPhone and iPod Touch. Optimized for viewing on the iPhone and iPod Touch, the NEJM Image Challenge App helps you to test your diagnostic and visual skills any time, any where.
It costs $2.99 and is available in the iTunes App Store.
