MockFlow vs Principle
| MockFlow | Principle | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | $99/mo |
| Open source | No | No |
| Platforms | extension, macOS, Web, Windows | Web, macOS, iOS |
| Free plan | Yes | No |
| Design systems | Yes | Yes |
Both are listed in Best Web Design Software, Best UI Design Tools, Best Game UI Design Software. On Freedom251, MockFlow scores higher on our published basis.