B2B Medicine E-Commerce App

I need a complete mobile application that lets pharmacies and other wholesale buyers order medicines from us as smoothly as they shop on any mainstream e-commerce platform. The app must run natively on both iOS and Android, sharing the same code-base if that speeds development... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, API Development, Flutter, iOS Development, iPhone, Mobile App Development, PHP, React Native)