A single Expo and React Native codebase serving a responsive website and native iOS and Android builds, on Supabase, for a working espresso bar. The menu is driven from the café's own Square catalogue — nine categories, 129 items and 541 size and price variations — so customisation, modifier validation and availability come from the till rather than a parallel list somebody has to remember to update. Customers get cart editing, pickup scheduling, order history with live status, a loyalty stamp card, and order-ready push notifications. Passwordless sign-in with guest checkout, and card entry through Square's Web Payments SDK with the native builds handing off to a hosted flow and deep-linking back on success. The website is live on Cloudflare Pages; the native builds are in TestFlight and not yet publicly listed on either store.