Best AI tools to build diagrams
| Tool | What it does | Pricing | Free tier | Refunds |
|---|---|---|---|---|
| Miro | Visual workspace for innovation where teams dream, design, and build together on an infinite, multiplayer canvas. | Free tier; paid from $8/mo | Yes | — |
| Napkin | Napkin turns your text into visuals so sharing your ideas is quick and effective. | Free tier; paid from $9/mo | Yes | 14 days |
| Eraser | AI co-pilot for technical design and documentation for engineering teams. | Free tier; paid from $15/mo | Yes | — |
| Wondershare | Building AI-powered creative software to empower people to express themselves, work smarter, and achieve more. | Not stated on site * | — | — |
| TypingMind | Advanced chat UI for AI models, allowing connection to multiple LLMs through a single interface. | Not stated on site * | No | 14 days |
— means the vendor does not state it on the pages we read.
* pricing not verified against the vendor's pricing page.
Visual workspace for innovation where teams dream, design, and build together on an infinite, multiplayer canvas.
Generate diagrams from sticky notes, synthesize research findings, create summaries of complex boards, and more.
— miro.com
Pricing, in their words: “$8/month per member, billed yearly” (pricing)
Subscription terms they state: cancel in-app · auto-renews (source)
Limits the vendor states:
- Prohibited data usage
- Age restriction
Napkin
Visit Napkinnapkin.aiCancellation & refund terms for Napkin
Napkin turns your text into visuals so sharing your ideas is quick and effective.
Napkin Visuals turns your text into diagrams, flowcharts, mind maps, infographics, and data charts.
Pricing, in their words: “$9per person / month” (pricing)
Subscription terms they state: cancel in-app · auto-renews · 14-day refund window (source)
Limits the vendor states:
- No refunds if usage exceeds 20% of credit allocation
Eraser
Visit Erasereraser.ioAI co-pilot for technical design and documentation for engineering teams.
Create diagrams at the speed of thought
Pricing, in their words: “Starter $15 per member / month billed annually OR $20 MONTHLY” (pricing)
Limits the vendor states:
- Free plan file limit
- API access restriction
Wondershare
Visit Wondersharewondershare.com
Building AI-powered creative software to empower people to express themselves, work smarter, and achieve more.
Convert concepts into visual diagrams rapidly using AI-powered generation combined with extensive template libraries.
No usage limits stated on the pages we read.
TypingMind
Visit TypingMindtypingmind.com
Advanced chat UI for AI models, allowing connection to multiple LLMs through a single interface.
Source: typingmind.com
Subscription terms they state: cancel in-app · 14-day refund window (source)
No usage limits stated on the pages we read.
FAQ
Is there a free tool to build diagrams?
Yes — Miro, Napkin, Eraser offer a free tier.
What is the cheapest paid option to build diagrams?
Miro starts at $8/month.
Which of these have an API?
Miro, Eraser, TypingMind document a developer API.
How do I cancel these subscriptions?
Miro: cancel in-app; Napkin: cancel in-app; TypingMind: cancel in-app. Eraser, Wondershare do not state a cancellation route on the pages we read.
Can I get a refund?
Napkin states a 14-day refund window; TypingMind states a 14-day refund window. The others (Miro, Eraser, Wondershare) do not state a refund policy on the pages we read.
Do these subscriptions auto-renew?
Miro, Napkin state that paid plans renew automatically. Check the billing page before subscribing; the rest do not state it either way.
Sources
Every fact above was read from the vendors' own pages: