Mermaid Viewer vs AI Room Design

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Mermaid Viewer compared with AI Room Design
Detail	Mermaid Viewer	AI Room Design
What it does	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports	Upload a photo of your room and preview design changes before you renovate
Stage	Not given	Startup
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free: unlimited editor and preview, 3 saved diagrams, 5 AI uses total, PNG export 1× with watermark. Starter: $6.99/month or $69.90/year; 30 saved diagrams, 500 AI conversations per month, PNG export up to 4× without watermark. Pro: $11.99/month or $119.90/year; unlimited diagrams, unlimited AI, PNG	Free: 1 preview. Starter Pack: $8.99 one-time for 10 credits. Creator Pack: $18.99 one-time for 30 credits. Studio Pack: $38.99 one-time for 100 credits. Credits never expire, no subscription.
Key features	Live preview of Mermaid code as you type AI diagram generator, editor and syntax fixer PNG export on every plan; JPG, SVG and PDF on Pro All 22+ Mermaid diagram types supported Share diagrams via public links and embeds Save diagrams to cloud with folders and version history Keyboard shortcuts and autocomplete Mobile-responsive editor with pan and pinch-zoom	Preserve room layout, windows, doors, and existing furniture Change wall color and paint finishes Modify sofa and cushion upholstery Update floor materials and rugs Change lighting fixtures and lamps Add or modify decor and wall accessories Free download for every generated design Priority generation queue available with paid credits
What makes it different	No account or sign-up required to start editing diagrams Affordable pricing: Starter at $6.99/month, Pro at $11.99/month Diagrams render in your browser; nothing stored unless you choose to save Fast editor with instant rendering and clear error messages	Works as a preview layer preserving your real room instead of rewriting the entire scene Keeps your layout, windows, and furniture in view by default to compare against your actual room No monthly subscription or auto-renewal; credits never expire Removes guesswork by showing exact colors and finishes rendered in your real room's lighting
Community votes	0	0
DR (Domain Rating by Ahrefs)	6 +1 (up) since last check	12 no change since last check
Trust Flow (Majestic)	3	5
Citation Flow (Majestic)	23	23
Referring domains (Majestic)	12	100

5 details filled in for both companies.

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