Key Features: Standard Calculator Functions: Performs basic arithmetic operations like addition, subtraction, multiplication, and division, ideal for everyday calculations. Advanced GST Calculation: Customised for Indian users, it accurately calculates GST at various rates (+3%, +5%, +12%, +18%, +28%, -3%, -5%, -12%, -18%, -28%). This functionality allows adding or subtracting GST from the input, showing both net and gross amounts. Percentage Calculations: Efficiently handles percentage calculations, essential for financial and statistical assessments. Formatted Display: Enhances readability by displaying numbers in a clear, formatted style. Responsive Design: Adapts seamlessly to different screen sizes, offering an optimal experience across devices. Error Handling: Capable of managing incorrect inputs or calculations, ensuring accuracy and reliability. User-Friendly Interface: Includes 'AC' for resetting inputs, 'DEL' for erasing the last digit, and a '=' button for instant results, making it user-centric. Perfect for both personal and professional use, this app is invaluable for anyone regularly involved in numeric and financial calculations. From splitting bills to computing expenses and GST for business transactions, it meets a broad spectrum of calculation needs.