Cognito System vs StudyPDF
| Cognito System | StudyPDF | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | iOS | — |
| Free plan | Yes | Yes |
| AI flashcards | Yes | Yes |
| AI quizzes | Yes | Yes |
| Source uploads | Yes | Yes |
| Mobile app coverage | ios | ios_android |
| Source citations | Yes | Yes |
| AI summaries | — | Yes |
Both are listed in Best AI Study Tools. On Inferse, StudyPDF scores higher on our published basis.