{
  "@context": "https://schema.org",
  "@type": "WebApplication",
  "name": "Blue Bird Scientific Calculator",
  "url": "https://bluebird.github.io/scientific-calculator/",
  "description": "Free online scientific calculator with advanced mathematical functions including trigonometry, logarithms, permutations, and combinations.",
  "applicationCategory": "EducationalApplication",
  "operatingSystem": "All",
  "offers": {
    "@type": "Offer",
    "price": "0",
    "priceCurrency": "USD"
  },
  "author": {
    "@type": "Organization",
    "name": "Blue Bird"
  },
  "featureList": [
    "Trigonometric functions (sin, cos, tan, inverse)",
    "Logarithmic functions (ln, e^)",
    "Factorial, permutations (nPr), combinations (nCr)",
    "Square root, cube root, square, cube",
    "History tracking",
    "Undo/Redo functionality"
  ],
  "screenshot": "https://bluebird.github.io/scientific-calculator/image/u.png"
}