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Making a Crypto Portfolio Tracker + Signal Capabilities App

Building a full-stack crypto portfolio tracker with real-time price feeds, signal detection algorithms, and a React Native mobile interface.

March 8, 2026Full StackMedium
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Making a Crypto Portfolio Tracker + Signal Capabilities App

Overview

I built a crypto portfolio tracker to "help" a friend who recently got into crypto trading.

He needed some journal and helpers/tools that can help him throughout the day, so I decided to build something proper for him.

The site pulls live market data from Binance through WebSocket, aggregates crypto news from CryptoPanic, and tracks market sentiment using the Fear & Greed Index. This is by no means enterprise grade, but I do get to learn about crypto a little bit.

Key Features

  • Live candlestick charts with technical indicators (RSI, MACD, Bollinger Bands and others)
  • Trading signal engine across different styles
  • Backtesting engine to validate strategies
  • Portfolio tracking (manual entry)
  • Trading journal with performance analytics
  • Price and portfolio alerts (alerts are an ongoing feature, currently appearing as a "notification" on the top bar)
  • Research notes and playbook for organizing trade ideas

Tech Stack

Built with Next.js (TypeScript), MongoDB and Redis.

Testing

Made unit tests and end-to-end tests to make sure everything works reliably enough.

Disclaimer

This site and its contents does not constitute financial advice. Always do your own research.