📱 Cardify - Mobile Client

A stunning, Neo-Brutalist Android application for secure, Peer-to-Peer card sharing and discount management.

Overview • Features • Tech Stack • Demo • Roadmap

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📖 Overview

Cardify is an Android app that lets people use bank card offers even if they don’t own that card.

If a discount requires an HDFC or SBI card, a buyer can connect with a card owner who has it and complete the purchase securely.

This repo contains the Android app, built using Jetpack Compose. It focuses on a smooth UI, fast performance, and real-time order flow between buyers and owners.

Backend: https://github.com/Mahir-Agarwal/Cardify

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✨ Key Features

📸 Camera OCR Integration Google ML Kit: Automatically scans physical credit/debit cards using the device camera. Smart BIN Routing: Extracts network types (VISA, MasterCard, RuPay) and securely identifies the issuing bank. Zero Privacy Leak: Raw card numbers are processed entirely on-device and are never exposed.	🎨 Neo-Brutalism Design Striking Visuals: Heavy black borders, stark colors, and bold typography. Interactive UI: Micro-animations, responsive haptics, and offset drop-shadows natively built into Jetpack Compose. Fluid Transitions: Seamless navigation between marketplace, orders, and profile.
🛒 Live Marketplace Dynamic Search: Filter available cards by specific banks (HDFC, ICICI, SBI) or types (Credit / Debit). Real-time State: Watch exactly where your order is in the lifecycle (Requested -> Accepted -> Paid -> Completed).	🔐 Secure Authentication Local Persistence: Encrypted local storage caching securely manages JWT authentication keys. Interceptors: Fully automated HTTP interception dynamically attaches authorization strings.

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🛠️ Tech Stack

Component	Technology	Description
Language	Kotlin 1.9+	Core logic and Android UI code.
UI Framework	Jetpack Compose	Modern declarative UI component construction.
Networking	Retrofit & OkHttp	Lightning-fast REST API communication and asynchronous coroutines.
Computer Vision	CameraX & Google ML Kit	Used for the native card-scanning engine overlay.
JSON Parsing	Gson	Serializes the complex Order and Auth schemas.
Architecture	MVVM	Clean separation of business logic and UI presentation states.

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🎥 Demo

Watch Cardify in action here!

👤 Owner POV

🛒 Buyer POV

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🚀 Roadmap & Currently Working On

We are actively developing new tools to enhance the peer-to-peer trading experience! Features currently in active development:

• 🌙 True Dark Theme: Inverting the Neo-Brutalism styles (Pitch Black / Neon accents) for a glowing, high-contrast night mode.
• 📟 OTP-Based Login: Seamless, password-less authentication for higher security standards.
• 💰 Live Wallet System: Tracking total commission earned for owners and total cashback actively saved for buyers.

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_{Engineered and Developed by Mahir Agarwal}