Earlier quoted context omitted.
I have yet to see any iOS app doing a reliable job in even just displaying Excel and Word documents. A long time ago I thought that LibreOffice or Pages were close enough, good enough to not need Office, but in reality there is still some random document once in a while that has the history messed up, or the layout hides a part of the text, or images are not at the right place. It might be 98% OK, but you can't alway…
but in reality there is still some random document once in a while that has the history messed up, or the layout hides a part of the text, or images are not at the right place We really should get a campaign going to persuade people to keep their Word and Powerpoint formats simple. Usually interop problems only happen when people do weird formatting things that look terrible anyway.
What I'd really want in the first place is people to care if what they are sharing is in the right format.
When a non technical clients asks a designer to see some early drafts of a site's UI, they will usually receive rendered jpg or png files, not Photoshop or Illustrator files. Most school teachers would be pissed of if students were to turn in home assignments in tex. I find it inconsiderate to send me docx files for documents that are read only on my side, just send me the PDF instead.