I’m looking for a developer who can quickly turn my sustainability concept into a working mobile application for both iOS and Android. The core flow is simple: someone has an unwanted item, they take a photo, add a short description, hit “List,” and the item becomes discoverable to nearby users. What I need right now is a functional prototype that includes: • Cross-platform build (native, Flutter, or React Native—whatever you’re fastest with) published to TestFlight and an Android testing track. • Clean, lightweight screens for item listing, browsing, and basic search/filter. • A minimal sign-in option (email, Google, or Apple). • Cloud back-end set up to store listings and images, ready to scale later. I’ve kept the first release intentionally focused on Item Listing so we can move fast; chat, advanced profiles, and swap tracking can be phased in after the MVP. Please outline your approach, estimated timeline to an installable test build, and any similar apps you’ve shipped. I’m ready to start immediately and need the initial version as soon as possible.