Description: I have a mobile app already built in native and published on Play Store and app store. It’s a marketplace app for the stone industry. I want to add new features and redesign it to make it work like a full buyer–seller platform and make it live on Chinese Social app platform also. Key Features to Add: • Email OTP login • Category & filter redesign • Auto-loading listings • Wishlist (like button) • Notifications (new/sold blocks) • User roles (visitors vs. serious buyers) • Auto-refresh & chat option • Bidding/auction system (24-hour max bid) • Tablet/iPad design support • Multi-language (Chinese & Italian) • AWS server setup Requirement: • Experience in native Android/iOS • Marketplace or e-commerce apps • Clean, scalable code + regular updates Engagement: Long-term, future feature expansion.