A working subscription-app foundation written twice with the same look and architecture: SwiftUI (iOS 17+, @Observable MVVM) and Jetpack Compose (Android). Includes onboarding, a paywall with monthly, yearly (7-day free trial) and lifetime plans, restore, entitlement-gated content, settings, an analytics interface, StoreKit 2 (with a .storekit file) and a Google Play Billing wrapper, plus a fake-billing mode that needs no store account. The Android project is built and tested (assembleDebug, 24 unit tests, 11 Paparazzi renders); the iOS project was not compiled in the lab (no Xcode available) and its marketing images are an HTML UI preview.