I need a complete consumer-to-consumer marketplace that lets people buy and sell digital products from their phones. The build has to run smoothly on both iOS and Android, so a shared codebase such as Flutter or React Native is welcome, but I am open to native stacks if you prefer. Core features to deliver • Secure user registration, login, and profile management • Product listing pages with rich descriptions, screenshots, and file attachments for digital goods • Fast, accurate in-app search and filtering so users can find exactly what they’re after Because we work exclusively with digital downloads, there’s no shipping or logistics layer to worry about, but the upload, storage, and protected delivery of files must be rock-solid. Beyond the app itself, I also need a clean, conversion-focused landing page that mirrors the brand style and funnels visitors to download the app on their preferred store. Mobile-first design for that page is essential. I will provide brand colours, logo files, and copy; you bring the UX flows, UI assets, backend architecture, and a testable build. Hand-off should include all design source files (Figma, Sketch, or XD), documented API endpoints, and store-ready binaries. If this sounds like your kind of project, let’s discuss your proposed tech stack and timeline.