Originally Posted by dreams
I looked all over also.
Librivox is always free, so maybe this is just a price you pay to be able to use an app to access and play their free books?
Is that same Alice in Wonderland (and reader) available on the Librivox site?
I don't think the dramatised version is the same. the Plus uses a different reader for each of the various parts with a central reader for the narrator. Here's what is said on the app's FAQ:
"What are plus and pro books?
In addition to the great free content provided by the Librivox Project, we also sell Plus and Pro books. These options are great way to improve the overall quality and enjoyment of your listening experience!
PLUS books are hand-selected, trimmed titles. We choose only the best Librivox narrators, and package the audio content for a streamlined and high-quality listening experience.
PRO books are professionally narrated and recorded titles. These are often new-release or current bestselling books. Send us an email if you have a request for a title that we don’t offer!"
So, perhaps the Plus versions are done specifically for the app? Again, maybe asking Librivox would clarify the situation--possibly they've done a deal with the app people--but that's only a guess.