AppScreen vs Mermaid Viewer

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

AppScreen compared with Mermaid Viewer
Detail	AppScreen	Mermaid Viewer
What it does	Free app store screenshot editor for panorama canvas design and export	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free tier: no card needed, everything for one app's phone screenshots with 3 projects and up to 5 slides. Pro: $9 paid once (not a subscription), unlimited projects, up to 10 slides on App Store and 8 on Google Play, tablet sizes and frames, cloud save, share links and agent control.	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
Key features	One panorama canvas across every slide App Store sizes for iPhone and iPad Google Play sizes for Android phones and tablets Phone and tablet frames Captions, backgrounds, images and logos Cloud save with version history (Pro) Share links with open and copy counts (Pro) Agent control over MCP (Pro)	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
What makes it different	One wide panorama canvas lets design elements run across multiple slides Free tier requires no account or card Pro is $9 paid once with no subscription Supports both App Store and Google Play in one tool Agents can design on the canvas via MCP integration	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
Community votes	0	0
DR (Domain Rating by Ahrefs)	31 −1 (down) since last check	6 +1 (up) since last check
Trust Flow (Majestic)	11	3
Citation Flow (Majestic)	23	23
Referring domains (Majestic)	70	12

5 details filled in for both companies.

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