FlatWorld vs Opiq
| FlatWorld | Opiq | |
|---|---|---|
| Free plan | No | |
| Paid from | €1/mo | |
| Platforms | Web | Android, iOS, Web |
| Free plan | No | Yes |
| Access model | mixed | subscription |
| Offline access | Yes | |
| Annotation tools | Yes | Yes |
| Institutional admin | Yes | Yes |
| Device support | web_desktop_mobile | web_desktop_mobile |
| Read-aloud support | Yes | Yes |
Listed together in Best Digital Textbook Platforms