| Price from | $24.90/mo | — |
| Free plan | — | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · Digital Transaction Management Software | 8.9 (#4) | 7.6 (#29) |
| Spec score · Electronic Signature Software | 8.8 (#5) | 7.7 (#24) |
| API | The company says its native API can embed contract execution into workflows, and its FAQ says AI agents can orchestrate signing workflows via natural language or API. | The product provides a RESTful API and developer documentation. |
| Authentication | The security center lists access codes, SMS and email verification codes, digital identity verification, and authentication as envelope verification methods. | Advanced authentication tools support compliance checks such as KYC. |
| Headquarters | The about page identifies Hong Kong as the international headquarters and gives the operator as ESIGN HK HOLDING LIMITED. | Stockholm, Sweden |
| Support | The site provides a service center, user manual, FAQ, ticket portal, and support email address. | The eSign API pricing page lists support Monday to Friday, 9–16 CET, and the product page says its team helps customers plan and get started. |