Principle vs Slickplan
| Principle | Slickplan | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | Yes |
| Paid from | $99/mo | $10.79/mo |
| Open source | No | No |
| Platforms | Web, macOS, iOS | api, Web |
| Free plan | No | Yes |
| Design systems | Yes | — |
Both are listed in Best Web Design Software. On Specifiction, Slickplan scores higher on our published basis.