Libby vs Thorium Reader
| Libby | Thorium Reader | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | Android, iOS, macOS, Web, Windows | iOS, Linux, macOS, Windows |
| Free plan | Yes | Yes |
| Supported platforms | web, windows, macos, ios, android | Windows, macOS, Linux, iOS, iPadOS |
| Supported formats | EPUB, PDF | EPUB 2/3, Fixed Layout EPUB, PDF, DAISY 2.02/3, Web Publications |
| Annotation tools | Yes | Yes |
| Reading sync | Yes | — |
| Offline reading | Yes | Yes |
Both are listed in Best Ebook Reader Software. On Inferse, Libby scores higher on our published basis.