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EventDiagram

eventdiagram.com

From $0.75/mo Free plan WebAPI
Visit eventdiagram.com
Spec score 9.0 #1 of 24 in Event Diagramming Software

What it is

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.

Spec sheet

What it does
EventDiagram is a browser application for creating, sharing and collaborating on event floor plans and diagrams.Read 15 Oct 2026 · eventdiagram.com
Product
EventDiagram is a web application for creating, sharing, and collaborating on event floor plans and diagrams.Read 29 Sep 2026 · eventdiagram.com
Intended users
The product is presented for hotels and venues, corporate and wedding planners, caterers, rental companies, and AV and production teams.Read 29 Sep 2026 · eventdiagram.com
Integrations
EventDiagram provides an MCP server and API keys so users’ Claude or other AI tools can read and write diagrams.Read 29 Sep 2026 · eventdiagram.com
Security
The maker says passwords use salted bcrypt hashes, sessions use signed expiring tokens in HTTP-only cookies, and traffic uses HTTPS.Read 29 Sep 2026 · eventdiagram.com
Support
The contact page says a person handles account, diagram and billing questions, typically within the same business day.Read 15 Oct 2026 · eventdiagram.com
Headquarters
Phoenix, Arizona, USARead 23 Sep 2026 · eventdiagram.com
Maker
Founder Daniel Pitner identifies himself as a live-event producer in Phoenix, Arizona.Read 29 Sep 2026 · eventdiagram.com
3D walkthrough
The product renders a 3D view from the same scene as the 2D diagram, using real object heights.Read 15 Oct 2026 · eventdiagram.com
AI copilot
The copilot accepts plain-language layout requests, creates a draft for review and runs on Claude.Read 15 Oct 2026 · eventdiagram.com
AI data handling
The maker says private content and copilot prompts are not used to train AI models; the diagram being worked on is processed by Anthropic to fulfill a copilot request.Read 29 Sep 2026 · eventdiagram.com
Airwall modeling
A divisible ballroom can be defined once and its section combinations and capacities derived automatically.Read 15 Oct 2026 · eventdiagram.com
API and MCP
EventDiagram provides API keys and a remote MCP server that can let Claude or other AI clients read and write diagrams.Read 15 Oct 2026 · app.eventdiagram.com
Company stage
The security page describes EventDiagram as an early-stage product built by a small Phoenix team.Read 15 Oct 2026 · eventdiagram.com
Compliance disclaimer
Terms state that capacity and spacing outputs are planning aids and are not fire-code, accessibility or structural certifications.Read 15 Oct 2026 · eventdiagram.com
Compliance limit
EventDiagram states that it is not SOC 2 certified today.Read 29 Sep 2026 · eventdiagram.com
Current integrations
The currently documented external connection is MCP/API; HoneyBook, CRM, calendar, webhook and automation integrations are listed as future work.Read 15 Oct 2026 · eventdiagram.com
Data ownership
Terms say customer diagrams, floor plans and guest lists remain customer content and can be exported at any time.Read 15 Oct 2026 · eventdiagram.com
Data processors
The privacy policy names DigitalOcean, Resend, Stripe, Anthropic, Sentry, Cloudflare and Google Workspace as processors or service providers.Read 15 Oct 2026 · eventdiagram.com
Documentation
The help site lists 26 articles and a 21-lesson course totaling about 32 minutes, using recordings of the product.Read 15 Oct 2026 · eventdiagram.com
Exports
PDF, image and data exports are available on every plan; Free exports contain a watermark.Read 15 Oct 2026 · eventdiagram.com
Exports and data portability
PDF, image, and data exports are available on every plan, including Free, with a watermark on Free exports.Read 29 Sep 2026 · eventdiagram.com
Import limitation
An importer exists for Social Tables, Prismm and AllSeated files, but reliable self-serve import for every export is still under development.Read 15 Oct 2026 · eventdiagram.com
Independent feature praise
Centric Events selected EventDiagram as its best overall option, highlighting unlimited free collaborators on every tier.Read 15 Oct 2026 · centric.events
Infrastructure
The application and database run on managed cloud infrastructure with encrypted backups and monitoring.Read 15 Oct 2026 · eventdiagram.com
Limit: incumbent integrations
Centric Events says teams relying on Cvent sourcing integrations may experience friction moving to EventDiagram.Read 15 Oct 2026 · centric.events
Limit: not CAD
Centric Events says the product is not CAD and does not provide hang plots, cable schedules, point loads or photometrics.Read 15 Oct 2026 · centric.events
Limit: track record
Centric Events identifies EventDiagram’s shorter history compared with incumbents as a factor buyers should weigh.Read 15 Oct 2026 · centric.events
Maker location
The maker says the product is built in Phoenix, Arizona, by people who work live events.Read 15 Oct 2026 · eventdiagram.com
Mobile availability
The product runs in a browser on phones and tablets, but the maker says native iPhone, iPad and phone apps are not yet available.Read 15 Oct 2026 · eventdiagram.com
Notable news: October 2026
The roadmap records October 2026 releases including wall-aware theater auto-fill, setup notes, multi-item rotation, concurrent editing and cross-diagram copying.Read 15 Oct 2026 · eventdiagram.com
Notable news: Prismm migration
The homepage says Prismm stopped accepting new events on August 26, 2026 and that access ends in June 2027, with EventDiagram offering migration support.Read 15 Oct 2026 · eventdiagram.com
Object library
The library includes tables, staging, AV, lighting, drape, tents and vehicles with real dimensions and heights, plus custom inventory items.Read 15 Oct 2026 · eventdiagram.com
Praise: production library
Centric Events praised the inclusion of production objects such as stage decks, LED walls, truss, front of house and distro.Read 15 Oct 2026 · centric.events
Rating on Capterra
0.0 out of 5 from 0 user reviewsRead 15 Oct 2026 · capterra.com
Rating on GetApp
0.0 out of 5 from 0 reviewsRead 15 Oct 2026 · getapp.com
Rating on Software Advice
No rating out of 5 from 0 reviewsRead 15 Oct 2026 · softwareadvice.com
Scale and capacity
Diagrams use real-world dimensions, and capacity, spacing, and square feet per seat update as objects move.Read 29 Sep 2026 · eventdiagram.com
Seating
Users can import guest lists, assign guests to tables, track meals and dietary needs, and check attendees in.Read 29 Sep 2026 · eventdiagram.com
Seating and guests
Users can import guest lists, assign seats, track meals and dietary needs, and check people in from the same list.Read 15 Oct 2026 · eventdiagram.com
Security certification
EventDiagram explicitly says it is not SOC 2 certified.Read 15 Oct 2026 · eventdiagram.com
Security controls
The service states that passwords use salted bcrypt hashes, sessions use signed expiring tokens, traffic is HTTPS and workspaces are tenant-isolated.Read 15 Oct 2026 · eventdiagram.com
Sharing and approval
Share-link recipients can view in 3D, leave pinned comments, and approve a specific diagram version without an account.Read 29 Sep 2026 · eventdiagram.com
Sharing and approvals
Share links allow browser viewing, pinned comments and version-specific client approval without requiring recipient accounts.Read 15 Oct 2026 · eventdiagram.com
Support and training
The site offers 16 help articles and a 25-minute course of 16 short lessons, and says security questions can be sent directly to the team.Read 29 Sep 2026 · eventdiagram.com
To-scale plans
Objects are measured in real feet and inches, with live spacing, capacity and square-feet-per-seat calculations.Read 15 Oct 2026 · eventdiagram.com

Plans and prices

Free Free $0 forever 1 active diagram · 3 AI copilot messages/month · unlimited viewers/commenters · core object library · watermarked exports Read 15 Oct 2026 · eventdiagram.com
Solo $9 a month $9 /mo or $90/yr 1 editor · unlimited events/diagrams · standard library · watermark-free exports · 25 AI messages/month Read 15 Oct 2026 · eventdiagram.com
Venue Group / Enterprise $9 a year Custom; scoped with the company. Multi-property hierarchy · SSO/SCIM · audit logs · API · managed migration · SLA and dedicated success Read 29 Sep 2026 · eventdiagram.com
Pro $18 a month $18 /mo or $180/yr Up to 3 editors · 75 AI messages/month · 3D view · production library · branding · version history Read 15 Oct 2026 · eventdiagram.com
Event Pass $24, paid once $24 paid once Full library · clean exports · 3D · valid for 90 days · no renewal Read 15 Oct 2026 · eventdiagram.com
Drawn for your event $49, paid once $49 paid once Team draws one event space from your supplied plan · plan for 90 days Read 15 Oct 2026 · eventdiagram.com
Small Venue $49 a month $49/property/mo Up to 3 event spaces · 1 converted space · unlimited team · own inventory · 150 AI messages/month Read 15 Oct 2026 · eventdiagram.com
Business $149 a month $149 /mo or $1,490/yr Unlimited members · 1 converted property · own inventory · 150 AI messages/month · production library · 3D Read 15 Oct 2026 · eventdiagram.com
Venue $149 a month $149/property/mo Up to 10 event spaces · up to 5 converted spaces · unlimited team · 300 AI messages/month · guided onboarding Read 15 Oct 2026 · eventdiagram.com
Large Venue Priced on request Custom quoted in one call More than 10 spaces · scoped migration · SSO/API requirements · managed rollout · service agreement Read 15 Oct 2026 · eventdiagram.com

Every EventDiagram plan and price →

Strong points and limits

Strong points

  • Plans reflect real-world dimensions and capacities
  • 3D view uses the same scene as the 2D plan
  • Share links support comments and version approval without accounts
  • Exports are available on every plan
  • Guest-list import and attendee check-in

Limits

  • Free exports carry a watermark
  • Not SOC 2 certified today
  • No free trial

Who it suits

It is presented for hotels and venues, event planners, caterers, rental companies, and AV and production teams. Teams that need shared review or guest seating tools may find its collaboration features relevant.

Verdict

EventDiagram pairs measured floor plans with 3D views, sharing and seating workflows. The free plan includes exports but watermarks them, and the maker states that the product is not SOC 2 certified today.

Where Specifiction places it

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