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barter.
2022
The app uses the CoinMarketCap API for real-time crypto trading. Sign up via Firebase, invest/sell, and monitor portfolios as market conditions fluctuate.
JavaAndroid StudioFirebaseRESTful APIXML
Overview
barter. is an Android investing app that connects live market data to an interactive portfolio experience. Users authenticate with Firebase, view and trade assets, and observe how market fluctuations affect their holdings in real time.
"Working on barter. taught me the practical discipline of making APIs feel native inside a mobile UX." — Kuldeep
Key Features
- •Real-time market data integration via CoinMarketCap.
- •Firebase-backed user accounts and persistence.
- •Interactive portfolio views with buy/sell simulation flows.
Applications
- •Learning tool for mobile-first financial UIs.
- •Prototype for personal finance education and risk visualization.
- •Demo to show API-driven mobile experiences to stakeholders or judges.
Tech Stack
Java (Android)Android StudioFirebaseCoinMarketCap API
Key Achievements
- •Implemented streaming market updates and interactive trading mechanics.
- •Produced a pitch deck and demo that articulate the product vision (moreUrl).
- •Solidified experience with mobile state management and secure API calls.
Impact
barter. provided a concrete, hands-on environment to learn mobile-first data synchronization and to build intuitive visualizations that help users understand market movement. The app sharpened mobile data handling skills and gave a demonstrable product for interviews and presentations.