I’m ready to build a dedicated parcel-only delivery service and need a full mobile solution that runs smoothly on both iOS and Android. Core functionality must include: • Real-time driver and package tracking so users can watch their parcel move on the map • Push and in-app delivery notifications at each status change • Instant chat between customer, driver, and support to resolve issues on the spot A clean customer app, a driver app with route optimisation, and a simple web-based admin panel for order management will round out the system. Code should be written with future scalability in mind (React Native or Flutter are both fine) and integrate with standard mapping and push-notification services. Please outline your preferred tech stack, an estimated timeline broken into milestones, and a brief portfolio of similar logistics work so I can move forward quickly.