Make a Cryptocurrency Tracker App with Flutter

What This App Does

A Cryptocurrency Tracker app serves a specific and growing need in today's mobile-first world. Building one with Flutter means you ship to iOS, Android, and the web from a single codebase, cutting development time dramatically while keeping a native-quality experience.

In this guide we walk through the essential features of a Cryptocurrency Tracker app, the packages that handle the heavy lifting, and the Dart code that ties everything together.

Main Features

Feature	Why It Matters
Live Price Feed	WebSocket connection to an exchange API for real-time price updates
Portfolio Tracking	Log purchases and sales; calculate P&L and percentage change
Alert System	Push notification when a coin hits a user-defined price threshold
Charts & History	Interactive candlestick or line charts over 1D, 1W, 1M, 1Y periods
Watchlist Management	Curated list of favourite coins with drag-to-reorder

How to Make a Cryptocurrency Tracker App with Flutter

1. Live Price Feed

WebSocket connection to an exchange API for real-time price updates

Reach for web_socket_channel for live prices to implement this without reinventing the wheel.

2. Portfolio Tracking

Log purchases and sales; calculate P&L and percentage change

Reach for fl_chart for interactive charts to implement this without reinventing the wheel.

3. Alert System

Push notification when a coin hits a user-defined price threshold

Reach for fl_chart for interactive charts to implement this without reinventing the wheel.

4. Charts & History

Interactive candlestick or line charts over 1D, 1W, 1M, 1Y periods

Reach for fl_chart for interactive charts to implement this without reinventing the wheel.

5. Watchlist Management

Curated list of favourite coins with drag-to-reorder

Reach for fl_chart for interactive charts to implement this without reinventing the wheel.