Tinder-Style App with Shopping & Quiz

I need a single mobile application that runs smoothly on both iOS and Android and combines three core experiences in one place:

• A Tinder-inspired matchmaking section built around swipe gestures, real-time chat/messaging, and rich profile creation.
• A fully featured shopping area with product listings, a secure payment gateway, a persistent cart, and members-only deals once a user’s subscription is active.
• A quiz platform that can host multiple quizzes, track scores, and feed achievements back into the user’s profile or subscription perks.

All three modules must sit behind a flexible membership system so I can offer free, tiered, or premium access and manage recurring payments from the same gateway that powers the store.

Deliverables
– Complete UI/UX design and front-end code for iOS and Android.
– Backend services (authentication, matchmaking logic, product & order management, quiz engine, subscription management, notifications).
– Admin dashboard for user, product, quiz, and membership oversight.
– Source code and API documentation ready for hand-over.
– Store submission support right through to live listings on the App Store and Google Play.

If you have experience weaving together Flutter, React Native, Firebase, Stripe (or similar), and real-time chat solutions, tell me how you would architect this and how long you’ll need. I’m looking for clean, well-documented code, scalable database design, and a clear roll-out plan that covers development, testing, and deployment.