| What it does | Dynamic QR codes you can edit after printing, starting free with no signup required
| A Rust performance profiler for finding CPU, memory, async, SQL, HTTP, I/O and lock bottlenecks
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| Stage | Not given
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| Founded | Not given
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| Based in | US
| PL
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| Pricing model | Freemium
| Open source
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| Pricing | Not given
| Free and open source under MIT license
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| Key features | - Create static and dynamic QR codes for URLs, Wi-Fi, contact cards, email, phone, SMS and more
- No signup required to generate and download codes
- Customize colors, frames, shapes and optional icons
- Download as PNG for screens or SVG for print
- Edit destination of dynamic codes after printing
- Scan analytics with device, location, referrer and time-of-day breakdown
- Embed your logo in the middle of QR codes
- Custom domain for QR code links (go.yourbrand.com/menu format)
- Bulk generation from CSV or Google Sheets add-on
- MCP server integration with Claude, ChatGPT and Cursor
| - Time, CPU & memory profiling
- Async observability for futures, channels and streams
- I/O monitoring for files, TCP and compression streams
- SQL query profiling for sqlx and Diesel
- HTTP calls profiling for reqwest and ureq
- HTTP server profiling for axum routes
- Concurrency metrics for Mutex and RwLock
- Tokio runtime monitoring
- Prometheus & Grafana integration
- CI regression detection with automatic benchmarking
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| What makes it different | - No signup wall or forced trial to generate and download codes
- Dynamic codes at $4/month, affordable for small businesses instead of enterprise pricing
- Edit printed codes anytime without reprinting
- Integrated with AI assistants through MCP server for code generation via Claude and ChatGPT
- No watermark on downloads for free account users
| - No overhead when disabled—all macros compile to no-ops
- Deterministic instruction counts with Callgrind for stable CI regression checks
- Instruments real applications with real workloads, not isolated benchmarks
- MCP server for AI agent integration
- Live TUI dashboard and static reports
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 8 ▼ −1 (down) since last check | 54 ▲ +2 (up) since last check |
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| Trust Flow (Majestic) | 3 | 13 |
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| Citation Flow (Majestic) | 25 | 34 |
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| Referring domains (Majestic) | 24 | 151 |
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QRFLOW.codes