Cross Platform E-commerce App

I want an end-to-end e-commerce mobile application that runs smoothly on both iOS and Android. The core objective is to give shoppers a fast, intuitive way to browse products, add items to their cart, and complete secure in-app purchases... (Budget: ₹600 - ₹1500 INR, Jobs: Android, Flutter, iPhone, Mobile App Development, Payment Gateway Integration, PhoneGap, React Native, UI / User Interface)