Food and Electronics Ordering App

I’m building a single mobile storefront that lets users order lunch and, in the same session, pick up a new set of headphones. The app must ship on both iOS and Android with a native-feeling experience.

Food section
• Clear menu display with photos, options and modifiers
• Real-time order-tracking once the kitchen accepts the ticket
• Secure payment gateway integration (cards, wallets, ideally Apple Pay / Google Pay)

Electronics section
A browsable catalogue with detailed specs, availability status and the same checkout flow shared with the food cart, so users can place mixed orders seamlessly.

Core expectations
• Clean, scalable codebase (React Native, Flutter or true native—open to your recommendation)
• Well-structured backend APIs for products, orders, payments and notifications
• Admin panel or simple CMS so I can update menus and inventory without dev help
• Source code, build instructions and a short hand-off session on release

Please highlight relevant experience delivering multi-category commerce apps when you respond.