| Price from | $25/mo | $223.92/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 8 | 3 |
| Spec score · Database Design Tools | 8.5 (#5) | 8.1 (#13) |
| Collaboration | The product lists real-time collaboration for teams, including inviting teammates to view and edit diagrams. | Data Architect Pro adds a central Repository with check-in/check-out, version history, and team collaboration. |
| Intended users | ChartDB says it was built to help developers and product teams understand database schemas and create shareable diagrams. | The pricing page describes Data Architect for individual modelers, Data Architect Pro for small teams, and Enterprise for enterprise teams needing collaboration. |
| Purpose | ChartDB is a database visualization and diagramming tool for visualizing, designing, and managing database schemas. | ER/Studio helps users design, implement, and understand data models for governed, scalable architectures. |
| Support | The free plan includes a community support forum, Pro lists 3-day email support, and Teams lists priority support. | The ER/Studio site provides a support page, knowledge base, FAQs, and product documentation links. |
