Skip to content
effecthub

ChatFlowchart vs Napkin AI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Entry price
ChatFlowchart from $15.90/mo, Napkin AI from $9/seat/mo — different billing units, so no direct winner
Free plan
Both have one
Public API
Napkin AI has one; not confirmed by us for ChatFlowchart
Higher Trust score
ChatFlowchart — 82 vs 77 for Napkin AI
Best fit
ChatFlowchart: Rebuilding an inherited diagram you only have as a screenshot or PDF · Napkin AI: Consultants and managers turning bullet points into slide diagrams

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

ChatFlowchartTurns a sentence, screenshot or PDF into an editable flowchart, ERD or UML diagramNapkin AITurns pasted or imported text into editable diagrams, flowcharts, mind maps, infographics and charts, with no prompt to write.

Side by side

FactChatFlowchartNapkin AI
CategoryDiagramming & WhiteboardsDiagramming & Whiteboards
Pricing modelFreemiumFreemium
Starts at$15.90/mo$9/seat/mo
Public APINot confirmedYes
Trust score82 / 10077 / 100
PlatformsWebWeb, API
CompanyChatFlowchartNapkin AI
Launched20252024
Last verifiedOct 15, 2026Oct 29, 2026

What our research says

ChatFlowchart

The screenshot-to-editable-diagram direction is the part worth showing up for — most text-to-diagram tools only go one way. Export into Mermaid, Draw.io and Excalidraw means you are not trapped if you stop paying, and the 30-day pass is an honest option for someone with one deck to build. The operator is a small New Hampshire-registered company with no team named on the site.

Pros

  • Reads screenshots and whiteboard photos back into editable diagrams
  • Around ten diagram families, including ERDs, UML, Gantt and probability trees
  • Exports to Mermaid, Draw.io and Excalidraw as well as PNG/SVG/PDF
  • A one-time 30-day pass and a credit pack exist alongside the subscription

Cons

  • No team or founders named; the terms give only a company name and a Portsmouth, New Hampshire address
  • The free tier watermarks PNG output and limits monthly generations
  • No public API found, so diagrams cannot be generated from your own scripts

Napkin AI

Napkin is a quick way for writers, teachers and consultants to add a clear diagram to a slide or post without opening a design tool. Designers who need pixel-level layout control or long, data-heavy charts will outgrow it.

Pros

  • Works from existing text instead of prompts
  • Every generated element stays editable
  • Exports to PPT and SVG on paid plans, PNG and PDF on Free
  • Free weekly credits cover light use

Cons

  • Free visuals carry Napkin branding
  • Credits scale with words selected, so long passages burn through them
  • No student or non-profit discounts

Which one fits

Choose ChatFlowchart if you need

  • Rebuilding an inherited diagram you only have as a screenshot or PDF
  • Drafting ERDs, UML and process charts from a written description
  • One-off diagram work, via the non-renewing 30-day pass

Choose Napkin AI if you need

  • Consultants and managers turning bullet points into slide diagrams
  • Bloggers and teachers adding explanatory visuals to text
  • Products that need visuals generated from text via API

ChatFlowchart vs Napkin AI: the questions people ask

Is ChatFlowchart cheaper than Napkin AI?

They charge in different units, so there is no like-for-like answer: ChatFlowchart starts at $15.90/mo, Napkin AI at $9/seat/mo. Entry price is the lowest paid plan as we last verified it.

Does ChatFlowchart or Napkin AI have a free tier?

Both: ChatFlowchart has a free tier, and Napkin AI has a free tier.

Which has a public API, ChatFlowchart or Napkin AI?

Napkin AI ships a public API, as of our last verification. A public API for ChatFlowchart is not confirmed by us — check its developer docs before you plan an integration.

More comparisons

Browse all Diagramming & Whiteboards →