Petal vs Sciwand
| Petal | Sciwand | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | $2.55/mo | Free |
| Open source | No | No |
| Platforms | extension, Web | iOS, Linux, macOS, Windows |
| Free plan | Yes | Yes |
| Paid from | 4.99 /user/mo | — |
| PDF annotation | Yes | Yes |
Both are listed in Best Reference Management Software, Best Citation Management Software. On Samsung Mobile US Press, Sciwand scores higher on our published basis.