I run a local dairy brand and want a mobile storefront that reaches customers on both iOS and Android. The core of the build is straightforward but must be solid: • Product catalog with photos, pricing, and short descriptions so shoppers can browse milk, cheese, yogurt, and other items. • Secure user authentication (email or mobile-OTP) so customers can create accounts, view past orders, and save delivery addresses. • Integrated online payment system supporting cards, UPI, and wallets for smooth checkout. • In-app order tracking that shows real-time status updates from “Confirmed” to “Out for delivery” to “Delivered.” I’m expecting a functional prototype complete with UI mock-ups, commented source code, and test builds for both platforms. A lightweight admin interface (web or mobile) to add/edit products and update order status is welcome if it keeps within scope. Ideal stack: React Native or Flutter for a single codebase, with Firebase or a similarly quick backend; I’m open to your recommendation as long as it stays efficient and maintainable. Hand-off items at project close: 1. Source code repository with build instructions 2. Design assets (icons, images, fonts) 3. API and database schema documentation 4. Signed APK and iOS TestFlight build Timeline and milestones are flexible—suggest what you need for design, development, testing, and final deployment to app stores.