Certinal vs Formstack Sign
| Certinal | Formstack Sign | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | $250/mo |
| Open source | No | No |
| Platforms | api | api |
| Audit trail | Yes | Yes |
| Document templates | Yes | — |
| Bulk sending | Yes | Yes |
| API access | Yes | Yes |
| SMS authentication | Yes | — |
| Signature order | both | — |
| Free plan | — | No |
Both are listed in Best E-Signature Software, Best Electronic Signature Software. On Samsung Mobile US Press, Certinal scores higher on our published basis.