DD Calc - Calculator & Tools

Duo Dev Technologies

About this app

DD Calc is a comprehensive, production-ready calculator suite designed for professionals, students, and anyone who needs powerful calculation capabilities.

🧮 Core Features:

📐 Scientific Calculator:
• Full mathematical expression parsing with PEMDAS/BODMAS
• Trigonometric functions (sin, cos, tan, and inverses)
• Logarithmic functions (log₁₀, natural log)
• Power and root operations (x², x³, xʸ, √x)
• Mathematical constants (π, e, factorial)
• Absolute value and modulus operations
• Degree and radian mode support

💰 GST Calculator (Indian Tax Rates)
• Inclusive & exclusive GST calculations
• Supports all standard GST rates (5%, 12%, 18%, 28%)
• Quick tax amount & total calculations
• Precise decimal handling

📅 Date Calculator
• Calculate differences between dates
• Add or subtract days from dates
• Business day calculations
• Age calculator (in years, months, days)

⚡ Programmer Calculator
• Binary, Octal, Decimal, Hexadecimal conversions
• Bitwise operations
• Perfect for developers and students

📏 Unit Converters (13+ Converters)
• Length (mm, cm, m, km, inches, feet, yards, miles)
• Weight (mg, g, kg, oz, lb, stone)
• Temperature (Celsius, Fahrenheit, Kelvin)
• Volume, Pressure, Speed, Energy, Power, Time, and more

🎨 Design & UX:
• Material Design 3 interface
• Dark mode support with automatic detection
• Responsive layout (Portrait & Landscape)
• Intuitive button layout
• Copy-to-clipboard functionality
• History tracking

⚙️ Performance:
• Completely offline - no internet required
• Fast calculations without lag
• Optimized for all Android devices
• Low resource consumption
• No ads or subscriptions

🔒 Privacy & Security:
• No data collection or tracking
• No internet permissions required
• Local storage only
• No account or login needed

Perfect for:
• Students (math, physics, engineering)
• Professionals (accounting, finance)
• Developers (programmer tools)
• Business owners (GST calculations)
• Everyone who needs reliable calculations

Download DD Calc today and experience the most comprehensive calculator suite on Android!

What’s new

Initial Release of DD Calc

Welcome to DD Calc - your comprehensive calculator suite!

✨ Features:
• Scientific Calculator with full expression parsing
• GST Calculator for Indian tax rates
• Date Calculator for date arithmetic
• Programmer Calculator (Binary/Octal/Hex)
• 13+ Unit Converters
• Dark mode support
• Completely offline - no internet required
• Material Design 3 interface
• Optimized for all Android devices

🚀 This is the initial production-ready release.