I want to turn ordinary paper into a fully connected writing surface by building a smart pen that streams everything I write or sketch straight to a companion app. The pen must: • capture handwriting and immediately convert it to editable text, • digitize free-hand drawings with stroke-level accuracy, and • recognise simple air gestures for quick commands such as undo or page-switch. All data should travel over Bluetooth Low Energy so the pen feels cable-free and responsive. On the mobile side I need a single code-base or two native apps that run smoothly on both iOS and Android, displaying the incoming strokes in real time while offering export to PDF, SVG or plain text. Core deliverables 1. Hardware prototype with firmware handling sensing, on-board buffering and BLE transmission. 2. Mobile application(s) with real-time rendering, text-conversion engine and gesture command layer. 3. Simple configuration utility (desktop or mobile) for firmware updates and calibration. 4. Build documentation, schematics and commented source so my internal team can iterate later. Acceptance criteria • Latency under 100 ms from pen tip to screen. • Text-conversion accuracy ≥ 90 % on standard English handwriting samples. • Battery life at least 6 hours of continuous writing. • Successful pairing and full feature parity on the latest iOS and Android versions. If you have experience with BLE firmware, handwriting recognition libraries, and cross-platform mobile development tools such as Flutter, React Native, Swift or Kotlin, I’m ready to see your approach and previous work.