I need a developer who can build a clean, reliable mobile app that connects to my Bluetooth-enabled air purifier and makes its data useful on both iOS and Android. The purifier already broadcasts the Air Quality Index and current filter status; your job is to capture those values, show them live, and keep a local history so I can review trends over time. Core requirements • Cross-platform build (one codebase) that pairs with the device over BLE, automatically reconnecting when the purifier is in range. • A real-time dashboard that updates the AQI and filter status instantly. • Secure, lightweight local storage of readings so I can swipe back through charts and see how air quality has changed. • Straightforward UI: no clutter—just live numbers, a simple line graph for historical data, and a filter health indicator. Technical notes I’m comfortable with React Native or Flutter, whichever you prefer, as long as the Bluetooth Low Energy handling is rock-solid. For data persistence, an on-device store such as SQLite, Core Data, or Hive is fine. I will supply the purifier’s BLE service/characteristic UUIDs and sample packets once we start. Deliverable A fully compiled iOS and Android app plus source code, build instructions, and a short README explaining how to change the UUIDs if future purifier models differ. If you’ve tackled BLE data collection or IoT companion apps before, I’d love to see a quick example.