Crypto Investment Tracker – Log buys and sells while visualizing your crypto portfolio

Summary: Crypto Investment Tracker is an offline-capable, single-page web app that logs crypto buys and sells, calculates average cost, tracks realized and unrealized P&L, and visualizes portfolio metrics using live prices from CoinPaprika. All data is stored locally in the browser, ensuring privacy and no cloud dependency.

What it does

It records transactions with fees, notes, and timestamps, fetches live USD prices from CoinPaprika, and displays portfolio analytics through seven Chart.js visualizations. Data is saved in localStorage with options for CSV export and JSON backup.

Who it's for

Users who want to manage and analyze their crypto investments locally without accounts or cloud storage.

Why it matters

It enables secure, private portfolio tracking and analysis without relying on external servers or accounts, supporting offline use as a progressive web app.