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Numeralens 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.

Numeralens compared with Mermaid Viewer
DetailNumeralens logo NumeralensMermaid Viewer logo Mermaid Viewer
What it doesProduction-ready Next.js financial reporting frontend with statements that reconcile to the cent Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
StageNot given Not given
FoundedNot given Not given
Based inNP Not given
Pricing modelNot given Freemium
PricingStandard licence $149 (founding price, regular $249) for products where end users do not pay; Extended licence $479 (founding price, regular $799) for products you charge end users for. Both one-time purchase, full source code included, six months of support. Founding price is 40% off for the first 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
  • Drill-down from any number or chart segment to underlying ledger entries
  • Full TypeScript source code with 355 automated tests
  • Runtime theming, dark mode, mobile card layouts, and 17 feature flags
  • 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
  • Statements that reconcile to the cent with full ledger drill-down, built on accounting principles not mock-ups
  • One-time licence with full source code, no per-viewer fees or licence server
  • Ready to deploy in a week: embed inside your product, rebrand in under an hour
  • Built for production: production-ready Next.js, strict TypeScript, 355 tests, server-enforced permissions
  • 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 votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check6 +1 (up) since last check
Trust Flow (Majestic)03
Citation Flow (Majestic)1323
Referring domains (Majestic)112

4 details filled in for both companies.

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