thanks Walter for your prompt and very clear answer. From what I know of MATLAB Mobile I think the round trip time to a remote server will render the app unusable.
From your knowledge, when developers need to rewrite MATLAB code to run on IOS/Android is there a language that lends itself best to this ? i.e. in terms of what similar functions may exist in the target language? Are the options essentially Java, C, ojbective C, C++ - thanks!