Android Kotlin Advanced E-commerce App

🚀 Android Kotlin E-Commerce / Digital Marketing App — User + Admin Roles | Promo Engine | Simulated Wallet (Demo/Educational)

Source Code For Sale — Customizable for Companies, Startups & Developers

I’m offering a complete Android E-Commerce + Digital Marketing application built with Kotlin, MVVM, Clean Architecture, Coroutines, and Firebase (Auth + Firestore).

This app is designed for education, training, prototyping, and company use as a customizable starter template.

It includes fully functional User and Admin roles, a promo code engine, and a simulated wallet system used for testing and UI/UX demonstration — no real money or payment gateway involved.

👤 User Features

Firebase Authentication (Register/Login)

Browse products, view details, and manage cart

Apply admin-generated promo codes at checkout

Simulated wallet balance deducted on purchases

(demo/testing/QA only — not real transactions)

🛠️ Admin Features

Add / Update / Delete products & prices

Generate and manage promo codes & discounts

Full control over product catalog & offers

Manage demo wallet values inside Firestore

⚙️ Tech Stack & Highlights

Kotlin, MVVM, Coroutines

Firebase Auth & Firestore (real-time updates)

Clean Architecture (Domain, Data, Presentation)

Modular, maintainable, and scalable code

Simulated wallet logic (client + server state in Firestore)

– for UX demos and educational purposes only

Promo code validation & price calculation flows

Business logic tested and easily extendable.

🎯 Who Is This For?

This project is ideal for:

🎓 Students & Junior Developers

Learn real-world app structure

Practice MVVM + Clean Architecture

Understand promo systems & wallet logic

Perfect for portfolio and interview demos

🏢 Startups & Software Companies

Use as a starter template

Add your branding, integrate a real payment gateway

Expand product modules and analytics

Save weeks of development time

💼 Agencies & Freelancers

Offer it as a base app to clients

Customize features and UI easily

📌 Important Note

The wallet system is simulated for demo, QA, UX testing, and educational purposes only.

It does not connect to payment gateways or handle real transactions.

Companies can easily upgrade it to real payments if needed.

📩 Message me for price, demo, and full feature list.

I can also customize or extend the app based on your needs.

I can als implement any Android Kotlin project for any purpose, whether commercial, educational, administrative, marketing, or customized according to the client's request, with the possibility of full modification and expansion of features according to the work requirements.