I want to launch a full-featured mobile shopping experience built specifically for Android phones and tablets. The app should let customers browse a product catalogue, add items to a cart, check out with secure payment options, and track their orders in real time. A clean, modern UI that follows current Material Design guidance is important to me, as is smooth performance on mid-range devices. Scope of work • Android-native build, ideally in Kotlin inside Android Studio • User registration, login (email, phone, or social), and profile management • Product search, filtering, and detailed pages that pull data from a scalable backend (Firebase, Supabase, or a comparable REST/GraphQL API) • Shopping cart, wish-list, coupon code handling, and an integrated payment gateway (Stripe or Razorpay preferred) • Push notifications for order updates and promotions • Simple admin console or configurable API endpoints so I can add or update products without another code change • End-to-end testing plus Play Store-ready release bundle with signing instructions Acceptance criteria – All core purchase flows work on Android 8.0+ without crashes or blockers. – Payments complete successfully in live gateway mode. – Source code, build instructions, and brief setup guide are delivered together in a private repository. An iOS version may follow once the Android build is stable, so modular architecture will be appreciated. Let me know the frameworks you prefer and a realistic timeline for an MVP and incremental feature rollouts.