The user experience with Libby is so much better than any other audiobook service I have tried. The app is nice looking and responsive, but also minimal. Bonus points because using their website provides the exact same UI and UX as the app.
The audiobook listening tools aren't bad though.
Personally I prefer the other app our library offers, but it's nice to have a choice of different collections.
I initially didn’t know about the web interface, and was pleasantly surprised to find it has feature parity with the app.
The native Libby apps have downloads/offline access and you can dismiss all the ux/window chrome while reading. The web interface doesn’t offer those features.
The web interface is a nice-to-have backup but Libby has discontinued development on their Windows app and keeps redirecting to the web interface which isn’t a suitable full substitute. There are great Windows tablet hardware that paired well with Libby and no other platform quite matches it for comics
The UI is good in some ways but filtering/sorting are extremely clumsy in my opinion. It works perfectly as a reader/player once you have books/audiobooks checked out though.