I need a full-featured mobile marketplace that lets riders buy or sell any two-wheeler—brand-new scooters, pre-owned motorcycles, even niche EVs—right from their phones. The same app should give merchants a smooth way to showcase accessories and genuine spare parts so users can complete their entire purchase journey in one place. The build must run natively on both iOS and Android. Core experience I’m after: • Powerful search with layered filters (make, model, year, price, location, condition, accessory type, etc.) so buyers land on the exact bike, helmet, or carburetor they need. • Secure user accounts where people post listings, manage stock, and leave verifiable reviews that build trust between individual sellers, dealers, and parts vendors. • Real-time in-app chat so negotiation, test-ride scheduling, and order questions stay inside the platform. • Integrated payment gateway for deposits, full purchases, or part orders—supporting cards, UPI, wallets, the works—backed by basic escrow logic to protect both sides. I’m comfortable with the tech stack you propose—whether that’s Flutter, React Native, or two separate native builds—as long as the UI stays polished and responsive and the codebase is clean enough for my team to maintain after launch. An admin console for listing approvals, analytics, and inventory management would be ideal. Deliverables 1. UX/UI prototypes for my sign-off 2. Production-ready iOS & Android apps uploaded to TestFlight/Play Console 3. Payment gateway integration fully tested in sandbox and live modes 4. Source code with documentation and handover support for 30 days If this scope aligns with your expertise, share a brief outline of your approach, timeline, and any similar automotive or marketplace apps you’ve shipped.