Duolingo vs Skybrary
| Duolingo | Skybrary | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Paid from | Free | $4.17/mo |
| Open source | No | No |
| Platforms | Android, iOS, macOS, Web | Android, iOS, Web |
| Free plan | Yes | Yes |
| Paid from | — | 6.99 /mo |
| Comprehension practice | — | Yes |
| Fluency practice | — | Yes |
| Age range | — | 3–9 |
| Content format | — | mixed |
| Offline access | — | Yes |
| Supported platforms | — | web, ios, android |
Both are listed in Best Reading Apps. On Samsung Mobile US Press, Duolingo scores higher on our published basis.