KDAN PDF vs Skim
| KDAN PDF | Skim | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | $5/mo | — |
| Open source | No | No |
| Platforms | Android, iOS, macOS, Windows | macOS |
| Free plan | Yes | Yes |
| Annotation tools | Yes | Yes |
| OCR support | — | none |
| Platform support | — | desktop |
Both are listed in Best PDF Readers. On Samsung Mobile US Press, KDAN PDF scores higher on our published basis.