FlowViz vs QR Promise
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
FlowViz compared with QR Promise
| Detail | 
FlowViz | 
QR Promise |
|---|
| What it does | Free live Mermaid diagram editor with no signup required
| QR codes that keep working forever
|
|---|
| Stage | Not given
| Not given
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| Founded | Not given
| Not given
|
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| Based in | Not given
| US
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| Pricing model | Free
| Free trial
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| Pricing | Not given
| Pro: $3/mo after 7-day free trial (card required)
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| Key features | - Live preview as you type
- 21 diagram types including flowcharts, sequence, class, state, ER, Gantt, git graph, mindmap and timeline
- Two-way editing for flowcharts
- SVG and PNG export
- Share diagrams as URLs with embedded diagram content
- Built-in template picker and cheatsheet
- No account or signup required
- Works entirely in browser with local storage
- Open Mermaid Live Editor links
- Mermaid v11 syntax support
| - Static QR generator for URLs, text, WiFi, vCard, email, SMS
- PNG and SVG downloads
- Dynamic codes with scan analytics by day, country, and device class
- Code Health Monitor alerts for broken destination URLs
- Migrate deactivated competitor codes
- One-click subscription cancellation
- Customizable colors and optional logo
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| What makes it different | - No signup, paywall, or data collection required
- Diagrams stay in your browser's local storage by default
- Two-way editing that updates code when you edit the canvas
- Live preview with no render button required
- Clean SVG export for professional use in docs and slides
| - Static codes generated in your browser never route through servers and keep working forever after cancellation
- Code Health Monitor checks if printed code destinations go down and emails you to fix the link without reprinting
- Affordable pricing with no server-side kill switch on static codes after cancellation
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 10 ▼ −4 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 5 | 0 |
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| Citation Flow (Majestic) | 27 | 0 |
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| Referring domains (Majestic) | 76 | 0 |
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4 details filled in for both companies.
More alternatives to FlowViz More alternatives to QR Promise