2.1.1 Technology Choices

1. React

• Reasoning:

• Mature ecosystem with extensive libraries for charts (Recharts, D3), state management (Redux, MobX), and UI components (Material UI, Ant Design).

• Virtual DOM ensures high performance even under frequent data refresh (e.g., live price feeds).

• Tooling:

• create-react-app (or Vite) for initial scaffolding.

• Webpack/Rollup for bundling + code splitting.

• Jest / Cypress for testing.

2. Swift

• Reasoning:

• Native performance on iOS, tight integration with Apple’s frameworks (UIKit or SwiftUI).

• Lower latency for real-time data, plus direct access to push notifications (APNs).

• Tooling:

• Xcode as the integrated development environment.

• SwiftUI or UIKit for UI layout.

• Alamofire or URLSession for HTTP networking.

• Socket.IO-Client-Swift for real-time features.

3. Shared Considerations

• WebSockets (via Socket.io) to push real-time data from the backend to both web and iOS.

• JWT Authentication for secure sessions across platforms.

• REST/GraphQL for non-real-time data fetching.