"Expense Tracker" is a web application built completely using React .The purpose of the application is to help people track their expenses and analyze spending patterns and identify areas for savings.in a simple and easy way.The application features a user-friendly interface that allows users to quickly and easily enter their expenses and categorize them based on type, date,and amount.The application is designed to be mobile-responsive,so users can access it from a range of devices, including smartphones and tablets.This helps to ensure that the application is accessible to as many users as possible, regardless of their preferred device.