Calculator Hub Android 📱

A comprehensive Android calculator application featuring 6 essential business calculators in one clean, intuitive interface.

🧮 Included Calculators

• Profit Margin - Calculate profit and profit margin percentage
• ROI - Return on Investment calculator
• Break Even - Break-even analysis for business
• Sales Tax - Calculate tax amounts and totals
• Commission - Calculate commissions based on sales
• Inventory - Track inventory costs and quantities

✨ Features

• Clean Material Design interface
• Easy-to-use input fields
• Real-time calculations
• Professional formatting with currency symbols
• Input validation and error handling
• Smooth navigation between calculators

🛠️ Tech Stack

• Language: Kotlin
• UI Framework: Material Design Components
• Architecture: MVVM (Model-View-ViewModel)
• Build System: Gradle (Kotlin DSL)
• Minimum SDK: API 24 (Android 7.0)

🚀 Getting Started

Prerequisites

• Android Studio Arctic Fox or later
• JDK 11 or later
• Android SDK 24+

Installation

1. Clone the repository

   git clone https://github.com/YOUR_USERNAME/Calculator-Hub-Android.git