Blinkit-Style Delivery App Build

I need a complete grocery-delivery application, modelled on Blinkit, released simultaneously on iOS and Android. Core functions at launch are straightforward: secure user registration and login, a clean product-browsing flow, and real-time order tracking from confirmation through delivery. The interface must feel as fast and intuitive as the reference app, with smooth transitions and minimal loading states.

Please code natively or with a cross-platform framework you are confident will match native performance; I am open to Flutter, React Native, Swift/Kotlin, or a similar modern stack as long as both stores receive first-class builds.

Submit a brief outline of the approach you would take and highlight previous work where you have already shipped consumer-facing apps of comparable scale. I am especially interested in examples that demonstrate your experience with secure authentication and live tracking features.

Deliverables
• Production-ready iOS and Android apps, approved for App Store and Google Play release
• Full source code with clear documentation
• Basic hand-off support to ensure I can manage future updates

If your background fits and you have solid proof of similar deliveries, I look forward to your proposal.