Latex port to the iPad 
How hard could It be to have the Tex engine and consequently latex compiling documents on an iPad? Is that a fool idea? Is there something already done?

I saw a Latex app on the app store that claims to be able to typeset documents through a link to a home always on dropbox server. This is not the solution I'm thinking to. I'd like to have my iPad producing PDF (with pdflatex) onto the iPad itself.
Latex port to the iPad 
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How hard could It be to have the Tex engine and consequently latex compiling documents on an iPad? Is that a fool idea? Is there something already done?

I saw a Latex app on the app store that claims to be able to typeset documents through a link to a home always on dropbox server. This is not the solution I'm thinking to. I'd like to have my iPad producing PDF (with pdflatex) onto the iPad itself.