Audiobook apps vary considerably in how users access their content. Some connect to public libraries, some focus on public-domain books, and others provide commercial catalogs through subscriptions or purchases.

For students, useful factors to compare include availability, library requirements, offline access, supported devices, and overall cost.
This resource provides an overview of
audiobook apps explained in a simple format for students and general readers.
https://thecampusreview.com/edtech-and-ai/free-audiobooks-apps/