Space Designer 3D vs Diagram Smith

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

Space Designer 3D compared with Diagram Smith
Detail	Space Designer 3D	Diagram Smith
What it does	Online floor plan maker and 3D interior design tool	Free online tools for flowcharts, charts, diagrams and timelines with no sign-up
Stage	Established	Not given
Founded	2009	Not given
Based in	FR	Not given
Pricing model	Freemium	Freemium
Pricing	Starter: Free (1 project, basic catalog, PNG/JPG/PDF exports, 10 credits/month). Premium: $25/month or yearly with 5-day free trial (200 credits/month, 25 projects, 2,500+ furniture items). Ultimate: $45/month or yearly with 5-day free trial (370 credits/month, unlimited projects, 4,500+ furniture i	Free: no account required, all diagram and chart makers, PNG/SVG/PDF export, no watermark. Pro: Monthly $9.99 a month, Yearly $99.99 a year with 7-day free trial, Lifetime $239.99 once. Euro area: €10.99 a month, €109.99 a year, €259.99 once (VAT included).
Key features	2D floor plan drawing with walls, doors, windows and measurements Real-time 3D visualization from 2D drawings Thousands of real furniture items and materials Photorealistic rendering in HD, 4K and 8K AI-powered image enhancement and automatic lighting Multi-format export including PDF, DXF, PNG and JPG Room areas and dimensions automatically calculated Multi-level floor design with stairs and roofs Team collaboration and project sharing with roles	Flowchart and process diagram maker with canvas and text-to-diagram modes Text-to-diagram tools for UML, ER and sequence diagrams Chart tools: pie chart, line graph, gauge and Sankey diagram Automatic diagram layout from typed text Export to PNG, SVG and PDF without watermark Share diagrams with share links Pro: editable .drawio export and vector PDF Pro: multi-page documents and layers Diagram checks for unlabelled branches and dead ends Works on phone and computer
What makes it different	No installation required - runs entirely in your browser Used by 6 million+ people worldwide since 2010 Automatic 2D to 3D conversion keeping both in sync One-click photorealistic rendering with AI optimization Built by architects for professional and consumer use	Completely free with no account required and no watermark on exports Nothing uploaded: all work stays on your device in your browser Results computed by the same tested code, not manually typed Multiple export formats: PNG at 4 sizes, SVG and PDF Converts between formats: Mermaid to draw.io, SQL to ER, Visio to flowchart
Community votes	0	0
DR (Domain Rating by Ahrefs)	48 −1 (down) since last check	3 +1 (up) since last check
Trust Flow (Majestic)	13	0
Citation Flow (Majestic)	35	19
Referring domains (Majestic)	285	4

5 details filled in for both companies.

More alternatives to Space Designer 3D More alternatives to Diagram Smith