FBReader vs KyBook 3
| FBReader | KyBook 3 | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Android, iOS, Linux, macOS, Windows | iOS, macOS |
| Free plan | Yes | Yes |
| Supported platforms | — | iOS, macOS |
| Supported formats | — | EPUB (DRM-free), PDF (DRM-free), MOBI, AZW3, DjVu, FB2, FB2.ZIP, CBR, CBZ, CBT, MP3, M4A, M4B, TXT, RTF |
| Annotation tools | — | Yes |
| Reading sync | — | Yes |
Both are listed in Best Ebook Reader Software. On Samsung Mobile US Press, FBReader scores higher on our published basis.