I’m launching a full-scale service platform and need the entire digital stack built from scratch: a responsive website plus companion apps for both iOS and Android. Core functions I must see working smoothly are: • secure user registration / social login • real-time service booking with calendar availability • two-way ratings and reviews after each job • live map tracking so users can watch providers en-route The website should mirror the apps in look and flow, share one database, and include an admin dashboard where I can approve providers, manage bookings, issue refunds, and pull reports. Push notifications, email alerts, and gateway-ready payments have to be wired in from day one. I’m happy for you to suggest the tech stack—whether that’s React, Next.js, Flutter, React Native, Laravel, Node, or something comparable—as long as it delivers fast load times, clean code, and an architecture that scales. Hand-over items: source code, documentation, brief video walkthrough, and deployment support to the App Store, Google Play, and my chosen hosting/VPS. If you’ve built similar two-sided platforms before, show me a live link or store listing and outline how you tackled authentication, realtime data flow, and location services.