I am building a full-stack real-estate and financial services platform and want it delivered in Flutter so we can launch simultaneously on iOS, Android and the web, all driven by a single Firebase backend. The job covers three visible layers: customer-facing mobile apps, a responsive website that mirrors the same features, and a browser-based admin panel for day-to-day management. Real-Estate module • Property listings with images, price, specs and status • Interactive map integration to plot each property • One-tap agent contact (in-app call, email and WhatsApp deep link) Loan-services module • Real-time loan calculator tied to our rate table • Application form with field validation and progress save • Secure document upload to Firebase Storage Booking & scheduling Users must be able to reserve property viewings or consultation slots, receive confirmations and reminders, and edit or cancel from their account area. Cross-cutting needs – WhatsApp integration for quick enquiries and status updates – Firebase Authentication, Firestore, Storage and Cloud Functions – Push notifications, role-based access, basic analytics – Source code handover for every milestone Please show one or two live or test apps built with Flutter that demonstrate comparable complexity, outline your high-level timeline, and attach a milestone-wise cost breakdown (design, development, QA, deployment). Payment will be released strictly per approved milestone. Give an estimated delivery window you are comfortable with; quality and maintainable code matter more to me than the absolute fastest turnaround. I am ready to start as soon as I review the demos and agree on the schedule.