I recently spoke at the Fall 2011 American Chemical Society meeting on cross-platform mobile chemistry apps. This talk argues that the best answer to the question "Which platform should I choose for my chemistry mobile app?" may well be "None of the above."
As support, I describe the creation of two mobile applications. The first, Reagents, took six weeks from concept to App Store and required no native code. The second, ChemTab, is a work in progress that illustrates how an HTML5 native app can interact with native code to access the file system for hi-performance I/O.