I’m launching a niche marketplace dedicated to sports memorabilia and Pokémon collectibles, and I need a complete digital presence—responsive website plus companion apps for both iOS and Android. Scope • Responsive web storefront with the same core journey as the apps • Native (or reliable cross-platform) apps for iOS and Android, published to App Store and Google Play • Buying-and-selling workflow: item listings, image upload, pricing, cart, checkout • Secure payment gateway integration (Stripe, PayPal, or a comparable solution) • User accounts with profiles, order history, saved searches, and push/email notifications • Search, sort, and basic filters so collectors can quickly locate specific cards, jerseys, or memorabilia • Lightweight admin dashboard to approve listings, manage users, and view transactions • Clean UI/UX—wireframes and visual mock-ups delivered for sign-off before full build • Tested build, ready for first public release, plus handover of source code and deployment instructions Tech is flexible, though I lean toward React (web) with React Native or Flutter for mobile and a Node or Laravel backend—but I’m open if you have a stronger stack in mind that meets the same goals. Please outline your approach, estimated timeline to MVP, and any relevant marketplace or e-commerce apps you’ve shipped.