HT Mega vs Principle
| HT Mega | Principle | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | $2.42/mo | $99/mo |
| Open source | No | No |
| Platforms | self-hosted, Web | Web, macOS, iOS |
| Free plan | Yes | No |
| Interactive prototyping | — | Yes |
| Design systems | — | Yes |
| Desktop app | — | Yes |
| Prototype sharing | — | Yes |
Both are listed in Best UI Design Tools. On Samsung Mobile US Press, Principle scores higher on our published basis.