| Price from | $2.98/mo | $99/mo |
| Free plan | Yes | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 17 | 4 |
| Spec score · Ui Ux Designing Software | 9.2 (#2) | 7.9 (#17) |
| Spec score · Prototyping tools | 9.4 (#3) | 7.9 (#17) |
| Spec score · Prototyping Software | 9.1 (#4) | 7.9 (#22) |
| Spec score · UI design tools | 9.1 (#5) | 7.8 (#26) |
| Spec score · Game UI Design Software | 9.1 (#5) | 7.8 (#26) |
| Spec score · UI/UX Design Tools | 9.1 (#5) | 7.9 (#20) |
| Free plan | Yes | No |
| Support | Mockplus says email support replies within 24 hours and provides FAQs, how-to documentation and community support. | The maker says Principle is a one-person company and that replies to messages may take at least a week; help is also available through its community forum and documentation. |
