FBReader vs ReadTheory
| FBReader | ReadTheory | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | Free | $40/mo |
| Open source | No | No |
| Platforms | Android, iOS, Linux, macOS, Windows | Android, iOS, macOS, Web, Windows |
| Free plan | Yes | Yes |
| Supported platforms | Windows, macOS, Linux, iOS, Android | web, Windows, macOS, iOS, Android |
| Paid from | — | 40 /mo |
| Comprehension practice | — | Yes |
| Age range | — | K–12, ESL, SPED, and adult education |
| Content format | — | mixed |
| Offline access | — | No |
Both are listed in Best Reading Apps. On Samsung Mobile US Press, ReadTheory scores higher on our published basis.