<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Mathypad - Smart Calculator with Units & Variables</title>
<meta name="description" content="A powerful command-line calculator that understands units, variables, and natural language. Convert between data units, assign variables, and perform complex calculations within text."
<!-- Open Graph / Facebook -->
<meta property="og:type" content="website">
<meta property="og:url" content="https://mathypad.app">
<meta property="og:title" content="Mathypad - Smart Calculator with Units & Variables">
<meta property="og:description" content="A powerful command-line calculator that understands units, variables, and natural language. Perfect for DevOps, capacity planning, and reusable calculations."
<meta property="og:image" content="https://mathypad.app/screenshots/screen1.png">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
<meta property="og:image:alt" content="Mathypad terminal interface showing unit-aware calculations like 50 GiB in MiB and network speed conversions">
<meta property="og:site_name" content="Mathypad">
<meta property="og:locale" content="en_US">
<!-- Twitter -->
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:url" content="https://mathypad.app">
<meta name="twitter:title" content="Mathypad - Smart Calculator with Units & Variables">
<meta name="twitter:description" content="A powerful command-line calculator that understands units, variables, and natural language. Perfect for DevOps, capacity planning, and reusable calculations."
<meta name="twitter:image" content="https://mathypad.app/screenshots/screen1.png">
<meta name="twitter:image:alt" content="Mathypad terminal interface showing unit-aware calculations">
<!-- Additional meta tags for better SEO and sharing -->
<meta name="keywords" content="calculator, unit conversion, command line, terminal, rust, devops, variables, natural language, capacity planning, data units, gbps, mbps, storage calculator">
<meta name="author" content="Mathypad">
<meta name="robots" content="index, follow">
<link rel="canonical" href="https://mathypad.app">
<!-- Favicon -->
<link rel="icon" type="image/x-icon" href="/favicon.ico">
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
<link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
<!-- Theme colors for mobile browsers -->
<meta name="theme-color" content="#667eea">
<meta name="msapplication-TileColor" content="#667eea">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
line-height: 1.6;
color: #333;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
min-height: 100vh;
}
.container {
max-width: 1200px;
margin: 0 auto;
padding: 2rem;
}
.hero {
text-align: center;
margin-bottom: 4rem;
color: white;
}
.hero h1 {
font-size: 3.5rem;
font-weight: 700;
margin-bottom: 1rem;
text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}
.hero .tagline {
font-size: 1.3rem;
font-weight: 300;
margin-bottom: 2rem;
opacity: 0.95;
}
.cta-section {
background: rgba(255, 255, 255, 0.1);
backdrop-filter: blur(10px);
border-radius: 16px;
padding: 2rem;
margin-bottom: 3rem;
border: 1px solid rgba(255, 255, 255, 0.2);
}
.install-code {
background: #1a1a1a;
color: #fff;
padding: 1rem 1.5rem;
border-radius: 8px;
font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
font-size: 1.1rem;
margin: 1rem 0;
display: inline-block;
box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.main-content {
background: white;
border-radius: 16px;
padding: 3rem;
box-shadow: 0 20px 40px rgba(0,0,0,0.1);
margin-bottom: 2rem;
}
.screenshot {
width: 100%;
max-width: 100%;
border-radius: 12px;
box-shadow: 0 10px 30px rgba(0,0,0,0.3);
margin: 2rem 0;
}
.features {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
gap: 2rem;
margin: 3rem 0;
}
.feature {
padding: 2rem;
background: #f8f9fa;
border-radius: 12px;
border-left: 4px solid #667eea;
}
.feature h3 {
color: #333;
margin-bottom: 1rem;
font-size: 1.3rem;
}
.feature p {
color: #666;
line-height: 1.6;
}
.examples {
background: #f8f9fa;
padding: 2rem;
border-radius: 12px;
margin: 2rem 0;
}
.examples h3 {
margin-bottom: 1rem;
color: #333;
}
.example-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 1rem;
}
.example {
background: white;
padding: 1rem;
border-radius: 8px;
font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
font-size: 0.9rem;
border-left: 3px solid #667eea;
}
.input {
color: #333;
margin-bottom: 0.5rem;
}
.output {
color: #28a745;
font-weight: bold;
}
.footer {
text-align: center;
color: rgba(255, 255, 255, 0.8);
margin-top: 3rem;
}
.footer a {
color: rgba(255, 255, 255, 0.9);
text-decoration: none;
}
.footer a:hover {
text-decoration: underline;
}
@media (max-width: 768px) {
.hero h1 {
font-size: 2.5rem;
}
.hero .tagline {
font-size: 1.1rem;
}
.container {
padding: 1rem;
}
.main-content {
padding: 2rem;
}
}
/* GitHub corner styles */
.github-corner:hover .octo-arm {
animation: octocat-wave 560ms ease-in-out;
}
@keyframes octocat-wave {
0%, 100% {
transform: rotate(0);
}
20%, 60% {
transform: rotate(-25deg);
}
40%, 80% {
transform: rotate(10deg);
}
}
@media (max-width: 500px) {
.github-corner:hover .octo-arm {
animation: none;
}
.github-corner .octo-arm {
animation: octocat-wave 560ms ease-in-out;
}
}
</style>
</head>
<body>
<a href="https://github.com/pato/mathypad" class="github-corner" aria-label="View source on GitHub"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"/><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"/><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"/></svg></a>
<div class="container">
<div class="hero">
<h1>mathypad</h1>
<div class="tagline">Terminal calculator for capacity planning, performance analysis, and infrastructure math</div>
<div class="cta-section">
<div class="install-code">cargo install mathypad</div>
<p style="color: rgba(255,255,255,0.9); margin-top: 1rem;">Rust-powered TUI calculator for engineers. Unit-aware, scriptable, with vim keybindings.</p>
<p style="color: rgba(255,255,255,0.8); margin-top: 1rem;">
✨ <a href="/web" style="color: rgba(255,255,255,0.95); text-decoration: underline;">Try the web version</a> - No installation required!
</p>
</div>
</div>
<div class="main-content">
<img src="screenshots/screen1.png" alt="Mathypad terminal interface showing unit-aware calculations" class="screenshot">
<div class="examples">
<h3>🔧 Real engineering calculations</h3>
<div class="example-grid">
<div class="example">
<div class="input">Download: 4.5 TB at 1 Gbps</div>
<div class="output">→ 10 h</div>
</div>
<div class="example">
<div class="input">50 GiB + 2 TB to MiB</div>
<div class="output">→ 2,101,248 MiB</div>
</div>
<div class="example">
<div class="input">API load: 500 QPS * 24 hours</div>
<div class="output">→ 43,200,000 query</div>
</div>
<div class="example">
<div class="input">line1 + 30% overhead</div>
<div class="output">→ 56,160,000 query</div>
</div>
<div class="example">
<div class="input">Backup: 10 TB / (100 Mbps * 0.8)</div>
<div class="output">→ 27.778 h</div>
</div>
<div class="example">
<div class="input">Storage: line3 * 365 days to PB</div>
<div class="output">→ 15.768 PB</div>
</div>
</div>
</div>
<div class="features">
<div class="feature">
<h3>📊 Variables</h3>
<p>Store intermediate results and reference previous calculations. Build complex infrastructure models step-by-step with automatic dependency tracking.</p>
</div>
<div class="feature">
<h3>💬 Context-Aware Parsing</h3>
<p>Embed calculations in documentation: "Database: 5 TB + 2 TB" or "Memory: 16 GiB per node". Extracts and evaluates expressions from technical specs and comments.</p>
</div>
<div class="feature">
<h3>🔄 Unit System</h3>
<p>Handles binary vs decimal units correctly (GiB vs GB), bandwidth vs throughput (Mbps vs MB/s), and rate calculations. No more unit conversion bugs in capacity planning.</p>
</div>
<div class="feature">
<h3>🧮 Dimensional Analysis</h3>
<p>Type-safe unit arithmetic prevents errors. Mix storage, bandwidth, time, and rate units naturally. The compiler ensures your math makes physical sense.</p>
</div>
<div class="feature">
<h3>🔗 Line references</h3>
<p>Reference previous results with line1, line2 syntax. Build infrastructure models where later calculations automatically update when inputs change.</p>
</div>
<div class="feature">
<h3>💾 Calculation Notebooks</h3>
<p> Mathypad files. Save capacity models, performance benchmarks, and infrastructure specs. Share reproducible calculations with your team.</p>
</div>
<div class="feature">
<h3>⌨️ Terminal-Native Interface</h3>
<p>Full vim keybindings: hjkl navigation, w/b word movement, dd line deletion, modal editing. Integrates into your existing terminal workflow.</p>
</div>
<div class="feature">
<h3>⏱️ Performance & Capacity Math</h3>
<p>Time-series calculations, rate conversions, and throughput analysis. Model API performance, estimate migration times, and plan infrastructure scaling.</p>
</div>
<div class="feature">
<h3>🌐 Production Infrastructure</h3>
<p>Built for SRE and DevOps workflows. Model production capacity, estimate costs, calculate SLA requirements, and validate infrastructure specs before deployment.</p>
</div>
</div>
<div style="text-align: center; margin: 3rem 0;">
<h2 style="margin-bottom: 1rem;">Ready to get started?</h2>
<!-- Web version CTA -->
<div style="margin-bottom: 2rem; padding: 1.5rem; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border-radius: 12px; color: white;">
<h3 style="margin-bottom: 1rem; color: white;">🌐 Try it now in your browser</h3>
<a href="/web" style="display: inline-block; background: rgba(255,255,255,0.2); color: white; padding: 12px 24px; border-radius: 8px; text-decoration: none; font-weight: bold; border: 2px solid rgba(255,255,255,0.3); transition: all 0.3s ease;"
onmouseover="this.style.background='rgba(255,255,255,0.3)'; this.style.borderColor='rgba(255,255,255,0.5)'"
onmouseout="this.style.background='rgba(255,255,255,0.2)'; this.style.borderColor='rgba(255,255,255,0.3)'">
Launch Web App →
</a>
<p style="margin-top: 1rem; color: rgba(255,255,255,0.9); font-size: 0.9rem;">No installation required • Works on any device</p>
</div>
<!-- Terminal installation -->
<div>
<h3 style="margin-bottom: 1rem;">💻 Or install the terminal version</h3>
<div class="install-code" style="background: #1a1a1a; color: #fff;">cargo install mathypad</div>
<p style="margin-top: 1rem; color: #666;">Launch with <code style="background: #f1f1f1; padding: 0.2rem 0.5rem; border-radius: 4px;">mathypad</code> for interactive mode or <code style="background: #f1f1f1; padding: 0.2rem 0.5rem; border-radius: 4px;">mathypad -- "100 GB / 10 Mbps"</code> for scripting and automation</p>
</div>
</div>
</div>
<div class="footer">
<p>Built with ❤️ in Rust • <a href="https://github.com/pato/mathypad">View on GitHub</a></p>
</div>
</div>
</body>
</html>