Principle vs ProtoPie
| Principle | ProtoPie | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | $99/mo | $25/mo |
| Open source | No | No |
| Platforms | Web, macOS, iOS | Android, api, iOS, macOS, self-hosted, Web, Windows |
| Free plan | No | Yes |
| Design systems | Yes | Yes |
Both are listed in Best Web Design Software, Best UI Design Tools, Best Game UI Design Software, Best Prototyping Software. On Inferse, ProtoPie scores higher on our published basis.