I work for a company that handles email support for several popular Mac and iOS developers. One of the developers has a mind mapping app for both Mac and iOS. It's a very simple app more geared towards casual users as opposed to power users. In the iOS version there's a list screen with all the available documents, both created in the app and transferred from the Mac app. In the Mac you open documents the regular way, from the filesystem. Several times already I've replied to emails from people asking if a similar list screen with all the available documents will be added to the Mac app. It seems that a lot of people do prefer the iOS way of having documents in the app instead of in a filesystem. While I don't dismiss the fact that a lot of people do miss a filesystem I just wanted to post this to remind people there are people for whom the iOS way is easier and there is a reason why Apple went that route. You don't have to agree with it but I think a little more understanding wouldn't hurt anyone.