Crypto Tracker – Real-Time Cryptocurrency Tracker

A robust React.js app to monitor real-time cryptocurrency data including prices, market caps, and trends using the CoinGecko API.

Overview

Built a feature-rich cryptocurrency tracking application that provides real-time data on prices, market caps, and historical trends. Implemented infinite scroll, interactive Chart.js visualizations across multiple timeframes, a coin comparison feature, and a debounced search with suggestions. Followed the presenter-container pattern with custom hooks for clean architecture, and optimized performance using lazy loading, suspense, and error boundaries.

Key Achievements

Integrated CoinGecko API with React Query caching to display real-time prices, market caps, and 24h changes for a large list of cryptocurrencies.

Built interactive Chart.js charts showing price, market cap, and volume data across 24-hour, 30-day, and 1-year timeframes.

Implemented infinite scroll for browsing an extensive cryptocurrency list and a debounced search box with live suggestions.

Developed a coin comparison feature allowing users to select and compare two cryptocurrencies side by side.

Managed global state with Zustand and followed the presenter-container pattern with custom hooks for reusable, maintainable logic.

Optimized performance using lazy loading, React Suspense, and error boundaries; added dark/light mode and INR/USD currency toggling.