✦ Now with API Lens — turn OpenAPI specs into living docs

Turn requirements
into diagrams. Instantly.

AI-powered BPMN, UML, C4, ERD and Flowchart generator — from plain text, in seconds. No code. No Visio. No moving boxes for 40 minutes.

Try free — no card requiredSee how it works
✦ No setup·Guided first diagram·All 6 diagram types·Explain & Update with AI
app.flowmapr.com
BPMN
Payment ProcessCustomerPayment SvcBankSubmit Order?Process PaymentConfirm Order
BPMN
UML Sequence
Flowchart
C4
API Lens

Every diagram type you need — BPMN, UML, C4, ERD and more

From business processes to API documentation — all in one tool.

⬡
BPMN 2.0
Business process flows with swimlanes, gateways, and events
↔
UML Sequence
System interactions and message flows between components
◇
Flowchart
Decision trees and process flows for any workflow
⬛
C4 Model (L1)
System context — people, systems, and their relationships
⬛
C4 Model (L2)
Container diagram — services, databases, and frontends
⚡
API Lens
Interactive API documentation from OpenAPI specs

How it works

01
Describe your process or paste your API spec
Write what happens in plain English, or drop in an OpenAPI spec, Swagger file, or code with API routes.
02
·
BPMN
UML Seq
C4
ERD
Get a diagram in seconds
Flowmapr generates BPMN, UML Sequence, ERD, Flowchart, C4 architecture, or interactive API docs — your choice.
03
↓ PNG
↓ PDF
↗ Share
</> XML
Edit visually, share with a link, export anywhere
Drag nodes, reconnect edges, edit labels. Share a read-only link or export to PNG, PDF, or BPMN 2.0 XML.

Everything you need to diagram faster

Beyond generation — Flowmapr helps you understand, update, and share your diagrams.

All plans · Free
Explain any diagram
Click Explain on any diagram — AI writes a plain-English description covering components, flow, and purpose. Perfect for onboarding new teammates.
Basic + Pro
Update with AI
Tell the AI what to change — 'Add a fraud check step before payment' — and it updates the diagram without starting over.
Basic + Pro
Version History
Every generation is auto-saved. Click History to browse all previous versions and restore any of them with one click.
All plans · Free
Guided onboarding
First-time setup walks you through your diagram type, example prompt, and generation — from zero to first diagram in under 60 seconds.
Pro only
Export anywhere
Push diagrams directly to GitHub README, Confluence pages, or Notion docs — without re-uploading or screenshotting manually.
All plans · Free
All 6 diagram types
BPMN, UML Sequence, ERD, Flowchart, C4 Architecture, and API Lens — every major format in one tool, no switching between apps.

Simple, transparent pricing

Free Trial
$0

Try Flowmapr with no commitment

  • Generate up to 3 diagrams
  • All 6 diagram types
  • Export PNG / PDF
  • Explain Diagram (AI description)
  • Guided onboarding
Get started free
Most popular
Basic
$20/mo

For individuals who diagram regularly

  • Generate up to 100 diagrams
  • API Lens
  • Export PNG / PDF
  • Explain Diagram (AI description)
  • Update Diagram with AI
  • Version History (last 20)
  • Public sharing
Get started
Pro
$50/mo

For power users with full access

  • Generate up to 500 diagrams
  • API Lens
  • Code Lens
  • Export PNG / PDF
  • Explain Diagram (AI description)
  • Update Diagram with AI
  • Version History (last 20)
  • Export to GitHub / Notion / Confluence
  • Public sharing
  • Share & embed
Get started

Frequently asked questions