All this enthousiasm about Markdown — we had TeX for ages already … and for scientific texts, subscripts and superscripts, not to talk of greek characters or even formula are painfull, much worse than in LaTeX Beside that, there’s a serious flaw with the iCloud sync. In either direction Mac-iPad it sometimes does not work, sometimes without warning (such that you continue writing into an outdated version of a document, a nightmare!), even erasing/reinstalling the iPad App does not help, only the erasing and reinstallation of the Mac version eventually did for me, but I guess that’s not the way … In those troubles, it would be good to have a good old-fashioned FILE you can share, you can exchange, you can open elsewhere, you can check its date, its size. With the obscure “no files” organisation, one looses the overview, if not everything … For the moment it costed me far more pain, effort, time and money than it helped me writing my documents, therefore one star — until the problems are solved!