iBooks offers a polished experience with a focus on newer titles and integration within the Apple ecosystem, while Project Gutenberg provides extensive access to public domain literature for free, making it ideal for classic book lovers.
Project Gutenberg
Pros:
Extensive collection of public domain books
Completely free to access and download
No ads or subscriptions
Wide variety of genres and formats
Accessibility features for visually impaired users
Cons:
May lack the latest books
Search functionality can be less intuitive
Quality of books can vary due to user uploads
iBooks
Pros:
Large collection of eBooks
User-friendly interface
Supports multiple formats (ePub, PDF)
Integration with Apple ecosystem (iCloud, Apple Books)
Personalized reading experience with bookmarks and notes