EventDiagram vs Metis Room Planner
EventDiagram
eventdiagram.com
Metis Room Planner
metisroomplanner.comSide by side
| Figure | EventDiagram | Metis Room Planner |
|---|---|---|
| Price from | $0.75/mo | £55/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Plans published | 10 | 6 |
| Spec score · Event Diagramming Software | 9.0 (#1) | 7.7 (#11) |
| Exports | PDF, image and data exports are available on every plan; Free exports contain a watermark. | The product exports floor plans as SVG, JSON and print-ready formats; its FAQ says SVG can be opened in design tools or printed to PDF. |
| Headquarters | Phoenix, Arizona, USA | 167-169 Great Portland Street, London, England, W1W 5PF |
| Support | The contact page says a person handles account, diagram and billing questions, typically within the same business day. | Pro includes email support with a stated response within one business day, and phone support is available on larger Enterprise agreements. |
Plans
EventDiagram
- FreeFree
- Solo$9 a month
- Venue Group / Enterprise$9 a year
- Pro$18 a month
- Event Pass$24, paid once
- Drawn for your event$49, paid once
- Small Venue$49 a month
- Business$149 a month
- Venue$149 a month
- Large VenuePriced on request
Metis Room Planner
- TrialFree
- Standard User£55 a month
- Pro User£149 a month
- Team User£395 a month
- Venue 360 add-on£4,925 a month
- EnterprisePriced on request
In their own words
EventDiagram
EventDiagram is a web application for making, sharing and coordinating event floor plans and diagrams. Plans use real-world dimensions, with capacity, spacing and square feet per seat recalculated as objects move. A 3D view comes from the same scene as the 2D plan and represents objects at their real heights. Its AI copilot can create or edit a to-scale layout from plain-language requests, with proposed changes left for review and approval. An MCP server and API keys let Claude or other AI tools read and write diagrams. Recipients of share links can view plans in 3D, leave pinned comments and approve a specific version without an account. Seating tools include guest-list imports, table assignments, meal and dietary tracking, and check-in. PDF, image and data exports are available on every plan, though Free exports have a watermark. The maker says private content and copilot prompts are not used to train AI models; Anthropic processes the diagram being edited for a copilot request. EventDiagram says it is not SOC 2 certified today. It offers a free plan; its pricing note lists paid plans from $9/mo. It runs on web and has an API.
Metis Room Planner
Metis Room Planner has no write-up on Specifiction yet; its figures are above.