I have an idea of the Bookshare downloader app that I wanted to make and I wanted to receive opinions regarding it before I start to work.
Currently you can use Bookshare in fully accessible way only with apps that implement its support, and that is limited to just a few apps. Technically you could download the files from the Bookshare web site and use it with any app, but from my experience in talking to people here that is something that is likely to be avoided.
This new app would allow you to log in to the Bookshare service, search for the book, download it and then open in any app that supports the file format. As Bookshare supports export to epub files, those should be importable to almost any reader app. There is some note on the Bookshare instructions for developers that some books may not be supported for this - if it turns out to appear in more than just few cases and the app proves to be interesting I will add local conversion from the DAISY format to epub in the future which would make all books supported.
Just for an example for this use case, currently Speechify doesn't support Bookshare integration but it supports epub files. With this app you would be able to load Bookshare books into Speechify.
The app would be completely free, the only indirect benefit I would have is that the app would mention that you can use it with my app Speech Central to read the content, but Speech Central is also completely free for VoiceOver users. On the other hand launching of this app would mean that Speech Central would drop direct support for Bookshare in the future in favor of this app. It is beneficial for technical and procedural reasons - e.g. Bookshare constantly changes free credentials for developers and Apple may block the app update if credentials for testing are not right and that could cause multiple problems, some of them potentially huge. Also due to fairly low usage of those options it is unlikely that more services will be added to Speech Central, but independent app may have more traction on its own and it may turn out to be reasonable to do that. At the moment I already have support for Project Gutenberg so it is very likely to be added to this new app.