Coin Profit —
Cryptocurrency
Portfolio Tracker
Coin Profit — Crypto Portfolio Tracker
The Challenge
Five Exchange Apps Open at Once — Still No Idea What the Total Portfolio Is Worth
Active cryptocurrency traders typically hold positions across multiple exchanges and wallets simultaneously. A trader might have Bitcoin on Binance, altcoins on a second exchange, and a hardware wallet holding long-term positions. To check overall portfolio performance, they would open each exchange app individually, manually total up values across accounts, and attempt to calculate a blended P&L — a process that was slow, imprecise, and required doing the same mental arithmetic every time.
Historical performance was even harder to track. Individual exchange apps show performance relative to the exchange's own pricing, but none provide a unified view of how a portfolio has performed across all holdings over 1 day, 1 week, 1 month, or 1 year. Traders making allocation decisions — should I add more to this position? should I rebalance? — were doing so without a clear picture of their actual historical returns.
The client needed a single, professional-grade app that could pull live prices from exchange APIs, unify holdings across wallets and exchanges, visualise P&L across selectable time horizons, and present this in a clean dark-first UI that matched the aesthetic of the crypto trading community it was built for.
The Solution
Unified Crypto Portfolio Tracker with Real-Time Prices, Multi-Wallet P&L & Historical Charts
Akshara Technologies built Coin Profit as a Flutter application with a dark-first design system built specifically for financial data. The app integrates directly with Binance and CoinGecko APIs to pull real-time asset prices, updating holdings values continuously without requiring the user to refresh. Each asset's current value is calculated against the user's recorded cost basis to show live unrealised P&L per position.
Multi-wallet support allows users to add positions from multiple exchanges and wallets — each tagged to its source. The unified portfolio view aggregates everything into a single total portfolio value and blended P&L figure. Users can drill into any individual asset to see its full position history, average buy price, current price, and time-series chart.
Historical P&L charts are built with the fl_chart library and support selectable time horizons: 1D, 1W, 1M, and 1Y. The charts render smooth line and area graphs showing portfolio value over time with touch-to-inspect interaction. Firebase persists user portfolio data, watchlists, and preferences across devices. The dark-first UI uses a navy and deep-charcoal palette with accent colours reserved for performance indicators — green for gains, red for losses.
What Was Delivered
Measured Outcomes
From Five Exchange Apps to One Unified Portfolio View
App Screenshots
Coin Profit in Action
Portfolio Overview
P&L Charts
Technology Stack
Tools & Technologies Used
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