Earlier quoted context omitted.
> "why write a new app" I'd imagine spearheading a ground up rewrite of their UI would be a lot more work too. thanks for taking this on! calibre is a pita for me to use, and I know what I'm doing. makes it impossible to recommend to anyone, whether they're my grandparents or asavvy tech person.
Trust me, I'm tech savvy but I tried Calibre once and I couldn't figure it out, so I just gave up.
Edit: I've read a few more comments and some a free with you, while others think it works fine. I'm wondering if there's something about the UI that clicks with some but not others.