Crypto Exchange Simulator

The Problem

I wanted hands-on experience with live financial data and charting, without the risk of wiring up real trading or real money.

What I Built

• 01Pulled live price data from the CoinMarketCap API and rendered trend charts with Chart.js.
• 02Used Context API for the simulated balance and portfolio state, with Firestore persisting transaction history per user.
• 03Built a full demo trading flow — buy, sell, balance updates, transaction log — that mirrors how a real exchange manages state.