Apastra vs Vellum
| Apastra | Vellum | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | $30/mo |
| Open source | No | No |
| Platforms | self-hosted | Android, extension, iOS, macOS, self-hosted, Web, Windows |
| Prompt version history | Yes | — |
| Prompt testing | Yes | — |
| Deployment controls | Yes | — |
| Free plan | — | Yes |
| API access | — | Yes |
Both are listed in Best AI Prompt Management Software. On Samsung Mobile US Press, Vellum scores higher on our published basis.