I’m launching a dedicated mobile store and need a complete e-commerce application delivered for both iOS and Android. The experience should feel native on each platform yet share a unified code-base where it makes sense, so I’m open to React Native, Flutter, Kotlin Multiplatform—or your own proven stack—as long as performance, security, and maintainability remain front-of-mind. Core functionality I must see in the first release: • User authentication • Payment processing (major cards, Apple Pay & Google Pay readiness) • Product catalog with search, filters, and variant support From onboarding to checkout, the flow has to be intuitive and quick. I’ll supply brand assets and product data; you’ll handle UI/UX, backend hookups, and store deployment. Clean, well-commented source code and a brief hand-off guide round out the deliverables so my in-house team can continue iterating after launch. If you’ve shipped polished retail apps before and can demonstrate smooth log-in, bulletproof payments, and a snappy catalog, let’s talk timelines and milestones.