Cross-Platform E-Commerce Mobile App

I need a full-featured e-commerce mobile application built for both iOS and Android. The core goal is to give shoppers a smooth, secure experience from product discovery right through to checkout, while providing me with an easily managed back-end... (Budget: ₹12500 - ₹37500 INR, Jobs: Android, Android App Development, Flutter, iOS Development, iPad, iPhone, Mobile App Development, React Native)