A Crypto Portfolio Tracker mobile app allows users to track their cryptocurrency investments in real-time, helping them manage and monitor their holdings, investments, and market performance. Here’s a summary of key aspects related to mobile app development for such a tracker:

1. Key Features:

Portfolio Management: Users can add multiple cryptocurrencies (Bitcoin, Ethereum, etc.) to their portfolio, track their holdings, and see performance changes over time.

Real-Time Market Data: Integration with APIs (like CoinGecko, CoinMarketCap, or CryptoCompare) to fetch real-time data, including price, market cap, volume, and price change.

Price Alerts: Users can set price alerts for specific coins to receive notifications when a coin reaches a certain value.

Transaction History: Allows users to track purchases, sales, transfers, and other activities in their portfolio.

Charting and Analysis: Provides historical data in graphical forms like candlestick charts or performance trends, so users can analyze market behavior.

Multiple Currency Support: Supporting different fiat currencies (USD, EUR, etc.) for tracking the portfolio's worth.

Security: Two-factor authentication (2FA), biometric authentication (fingerprint/Face ID), and end-to-end encryption to protect user data and transactions.

Tax Reporting: Some apps include features to track capital gains, losses, and offer tax reporting for users.

2. Technology Stack:

Frontend Development: Mobile frameworks like React Native, Flutter, or native development with Swift (for iOS) and Kotlin/Java (for Android).

Backend Development: Cloud-based services using technologies like Node.js, Python (Flask/Django), or Ruby on Rails. Backend manages user authentication, data synchronization, and market data.

APIs for Data: Integrating APIs like CoinGecko API, CryptoCompare API, or CoinMarketCap API to fetch real-time cryptocurrency data.

Database: Cloud-based databases like Firebase, MongoDB, or PostgreSQL to store user data, transaction history, and portfolio details.

Push Notifications: Implementing push notifications via Firebase Cloud Messaging (FCM) or OneSignal for price alerts and app updates.