I need a fully functional mobile app that lets readers list, discover, and swap books on both iOS and Android. Core requirements • Account creation with email or social login. • Book listing: add cover photo, title, author, brief notes, and pick-up location. • Powerful search: filter by title, genre, or proximity so users quickly see books available nearby. • In-app messaging so two members can agree on the exchange details without leaving the app. Scope & deliverables 1. Wireframes and visual mock-ups to confirm flow and look. 2. Cross-platform build (React Native, Flutter, or similar) compiled for TestFlight and Play Store testing. 3. Clean, well-documented source code plus a short deployment guide. 4. One round of revisions after user testing to iron out critical bugs. Timeline I’d like the first test build in my hands within a month, so please include a clear milestone schedule. If you’ve shipped marketplace or location-based apps before, I’d love to see them.