Cogni vs Retain
| Cogni | Retain | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | Android, iOS, Web | Web, iOS, Android |
| Free plan | Yes | Yes |
| Adaptive review | Yes | Yes |
| Source formats | mixed | mixed |
| Card formats | mixed | mixed |
| Study modes | flashcards | mixed |
| Mobile apps | Yes | Yes |
Both are listed in Best Flashcard Apps, Best AI Flashcard Generators. On Samsung Mobile US Press, Cogni scores higher on our published basis.