SimpleDiagrams vs ThumbBlitz

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

SimpleDiagrams compared with ThumbBlitz
Detail	SimpleDiagrams	ThumbBlitz
What it does	Simple, sketch-style diagrams on your Mac	Free browser-based Roblox thumbnail maker with no sign-up, no watermark, no AI generation
Stage	Not given	Startup
Founded	Not given	2026
Based in	AU	Not given
Pricing model	Freemium	Not given
Pricing	Desktop: one-time purchase via Mac App Store. Cloud (coming soon): Beginner $19/month (5 diagrams, 1 author seat, 10,000 updates/month), Pro $90/month (50 diagrams, 5 author seats, 500,000 updates/month), Enterprise $250/month (250 diagrams, 25 author seats, 5,000,000 updates/month). All Cloud plans	Free: 3 watermark-free exports a day, no account required. Pro: $4.99/month or $29/year (or $49 lifetime) for unlimited exports and batch export of all sizes at once.
Key features	Hand-drawn sketch style for flowcharts and diagrams Free shape libraries for AWS, Google Cloud, networks, energy and more Offline-first desktop app with one-time purchase AI agent integration for automatic diagram generation AWS Networking & Content Delivery shapes (22 shapes) Google Cloud shape library (42 shapes) Energy shapes library (batteries, solar panels, power plants) 7-day free trial	Upload and edit screenshots locally in browser without uploading to server Add bold headline text with outline and shadow effects Drag-and-drop sticker overlay system Export at multiple sizes: 1920×1080, 1280×720, 512×512 8 headline text styles and 38 backdrop presets Support for PNG, JPG and WEBP file formats Export as clean PNG with no watermark or branding Pro plan enables batch export of all sizes in one click 22 free template presets for quick start
What makes it different	Hand-drawn aesthetic that looks intentional, not generic Works offline with one-time purchase, no subscription required Free, open-source AI skills for automatic diagram generation Specialized shape libraries for cloud architecture, networks and domain-specific work	No account or sign-up required—open the page and start immediately Never uploads your files to a server—all processing happens on your device Not AI-generated—uses your actual screenshot, not synthesized imagery Three free watermark-free exports daily on the free plan Works on any device with a browser—no installation or updates needed
Community votes	0	0
DR (Domain Rating by Ahrefs)	35 +3 (up) since last check	6 no change since last check
Trust Flow (Majestic)	14	7
Citation Flow (Majestic)	33	15
Referring domains (Majestic)	177	7

4 details filled in for both companies.

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