I’m ready to turn a straightforward idea into a polished doctor-appointment app. The core of the project is an intuitive booking tool backed by rich doctor profiles and a real-time chat so patients can clarify details without a phone call. Secure payment-system integration is a must so users can confirm bookings and settle consultation fees right inside the app. Here’s what I need from you: • A clean, mobile-first interface for appointment scheduling that lets users pick a time, receive confirmation, and manage rescheduling or cancellations. • Structured doctor profiles with photos, specialties, credentials, and available time slots. • In-app chat between patient and doctor (or clinic staff) with push notifications for new messages. • Seamless, PCI-compliant payment gateway integration—patients pay while booking and the transaction is logged for both sides. • Admin panel for adding doctors, adjusting availability, and viewing payment records. • Source code, build instructions, and a short hand-off call or documentation so I can maintain or scale features later. Acceptance criteria — Smooth booking flow tested on at least one iOS and one Android device (emulator or physical). — Doctor search and profile load in under two seconds on a stable connection. — Chat messages deliver in real time with push notifications. — Payment transactions complete successfully in test and live modes. If you’ve built healthcare, marketplace, or fintech apps before—and especially if you’re comfortable integrating Stripe, PayPal, or similar gateways—let’s talk.