Bookends vs Wren
| Bookends | Wren | |
|---|---|---|
| Free plan | No | No |
| Free trial | Yes | No |
| Paid from | $1.25/mo | — |
| Open source | No | No |
| Platforms | extension, iOS, macOS | macOS |
| Free plan | Yes | Yes |
| PDF annotation | Yes | Yes |
| Browser capture | — | Yes |
Both are listed in Best Reference Management Software, Best Citation Management Software. On Inferse, Bookends scores higher on our published basis.