Mermaid Viewer vs RoomRearrange

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 RoomRearrange
Detail	Mermaid Viewer	RoomRearrange
What it does	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports	AI room redesign that keeps your existing furniture and reimagines the layout, colors, and lighting around it.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Not given
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: one 1K preview after Google sign-in. Room Pack: $19.90 USD for 30 credits; each redesign, revision, or 2K version uses one credit.
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	Keep specified furniture pieces while redesigning surrounding layout, colors, and lighting Generate photorealistic room concepts from uploaded photos Automatic room analysis identifying room type, design problems, and fitting direction Side-by-side comparison of original and redesigned room Request revisions in plain language and download results Google sign-in authentication for free and paid previews Accepts JPG, PNG, WebP, and iPhone HEIC photo formats up to 10MB
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	Keeps your chosen furniture pieces recognizable while redesigning around them, unlike generic AI room tools Works from a single honest room photo without requiring professional vocabulary or lengthy questionnaires Provides one free preview with no credit card required, making early-stage exploration risk-free Shows practical before-and-after examples of actual room transformations before you upload your own photo Supports focused revisions and infers interior direction from existing furniture and architecture rather than requiring style selection
Community votes	0	0
DR (Domain Rating by Ahrefs)	6 +1 (up) since last check	1 +1 (up) since last check
Trust Flow (Majestic)	3	3
Citation Flow (Majestic)	23	20
Referring domains (Majestic)	12	7

4 details filled in for both companies.

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