I need a native iOS application built from the ground up with seamless in-app purchase capability that passes Apple’s review on the first attempt. The core scope covers: • Designing a clean, user-friendly interface in Swift or SwiftUI. • Implementing Apple’s StoreKit for consumable and non-consumable purchases, including sandbox testing. • Handling receipt validation, restore purchases, and graceful error states. • Preparing all metadata, screenshots, and provisioning profiles for App Store submission. Source code must be well-commented and handed over on completion, together with a brief setup guide so I can run the project locally. Future phases may add social media sharing and push notifications, so structuring the code for easy expansion is appreciated.