Highlights vs Skim
| Highlights | Skim | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | macOS, iOS | macOS |
| Free plan | Yes | Yes |
| Annotation tools | Yes | Yes |
| OCR support | advanced | none |
| Offline access | Yes | — |
| Platform support | cross-platform | desktop |
Both are listed in Best PDF Readers. On Samsung Mobile US Press, Highlights scores higher on our published basis.