I need a cross-platform mobile app that connects to a car’s OBD adapter over either Bluetooth Classic or BLE and delivers a clear, user-friendly diagnostic experience on both Android and iOS. Core requirements • Live data streaming: show real-time sensor values as they arrive. • Visual dashboards: plot key metrics in graphs and gauges so trends are obvious at a glance. • Trouble-code support: read, list and explain all standard and manufacturer-specific DTCs. • Automatic fix suggestions: whenever possible, pair each code with a brief solution or next-step guide. • Exportable test report: allow drivers to save or share a snapshot of the scan results (PDF or similar). Scope and tech notes – The app must seamlessly switch between Bluetooth Classic and BLE adapters without extra setup. – Clean, modern UI that looks and behaves the same on Android and iOS; a shared codebase (Flutter, React Native or similar) is acceptable if it meets performance needs. – Include simple connection management (scan, pair, reconnect) and a demo mode so I can test the UI without hardware. – Code should be well-commented, with build instructions and any third-party library licenses clearly documented. Deliverables 1. Source code repository with commit history. 2. Compilable builds for Android (.apk/.aab) and iOS (TestFlight or .ipa). 3. Brief setup guide and user manual. 4. One revision cycle after initial review to fix critical bugs or polish UI details. If you have prior experience with OBD, ELM327, or similar automotive diagnostics, please highlight it and share screenshots or links.