I need a custom iPad (or Android tablet) application that will finally let us retire the Excel sheets we use to track PVC board production. Supervisors on the shop floor will key in only the production quantities; the app must do the rest—calculating efficiency metrics, defect rates, and rolling production trends automatically. Every extrusion machine’s live output has to reach a manager-level dashboard within seconds, giving me a real-time bird’s-eye view of each line. A clear, colour-coded layout works fine as long as the data refreshes continuously. Key deliverables: • Tablet-friendly UI with offline capture and automatic sync • Secure login with operator and manager roles • Database that stores historical records and exports to Excel/CSV • Configurable formulas for all efficiency and defect calculations • Real-time dashboard for extrusion machines, updating in under 10 s Acceptance criteria 1. Entering a test quantity on any extrusion line instantly reflects on the manager dashboard (≤10 s latency). 2. Calculated efficiency, defect, and trend charts match the reference spreadsheet we supply. 3. Export produces a clean, column-perfect file that opens in Excel without adjustment. I’m open to whichever tech stack you recommend—native Swift, Flutter, React Native—as long as the solution is stable and easy for our team to maintain. If direct machine integration via OPC-UA, Modbus, or REST APIs simplifies the live feed, outline that in your proposal. Let’s replace spreadsheets with a seamless, shop-floor-ready app.