My library and reading app

I have been using this app for a few years, and see no reason to move to another app.
I like the way my library is organized, with a drill down view per author (for me the most important library feature) and direct download from my calibre server.
Reading provides all the features i need, e.g. a status bar, bookmarks, night view
The only thing i miss is the ability to pull the series or tags information from calibre and use it as categories within the app.

Capi capi about ShuBook SE, v3.8