Centrical vs Duolingo
| Centrical | Duolingo | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | Yes |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | api, Web | Android, iOS, macOS, Web |
| Free plan | No | Yes |
Both are listed in Best Learning Gamification Software. On Everything Xiaomi, Duolingo scores higher on our published basis.