I need a fully functional mobile shopping experience delivered as one code-base that compiles cleanly for both iOS and Android. The store will sell physical goods only, so inventory presentation, cart, and shipping logic all revolve around tangible items. Shoppers will create accounts and sign in exclusively with their phone number and a one-time password; no email or social logins are required. Beyond the usual product catalogue, I want smooth search, category browsing, secure checkout with a mainstream payment gateway, real-time order status updates, push notifications for promotions and delivery milestones, and an intuitive account area for past orders and returns. A lightweight admin interface (web or in-app) to edit products, prices, stock levels, and view basic sales reports is essential for day-to-day operations. Acceptance criteria • iOS build ready for TestFlight and App Store submission • Android build ready for internal testing and Play Store release • Source code with clear README explaining environment setup, build commands, and API endpoints • Phone number + OTP flow tested and working in both builds • Basic unit or widget tests covering core buying flow Feel free to lean on Flutter, React Native, or native stacks; the priority is smooth performance and maintainable code.