The core of my productivity app is already live on lovable.dev; what’s missing is a clean rollout to the iOS App Store and Google Play. I need you to wire up in-app purchase subscriptions—monthly and yearly—with a free-trial option, make sure receipts validate properly on both platforms as well as have subscriptions be synced in app and web, and handle every compliance detail so the app sails through review. All screens, flows, and web-based functionality are done; your focus will be on: • Adding the native IAP code (StoreKit / Google Play Billing or a cross-platform wrapper that meets both stores’ guidelines). • Surfacing the purchase options exactly as designed and ensuring entitlements unlock seamlessly across devices. • Producing release-ready builds, provisioning profiles, screenshots, and metadata tweaks that satisfy Apple’s and Google’s policies for subscription apps. • Guiding me through testflight / internal testing so we can squash any last-minute issues before submission. Acceptance criteria: subscriptions charge correctly, trial status converts without errors, receipts validate server-side, and both stores approve the first submission. If you’re comfortable taking a lovable.dev project the final mile, let’s get this productivity tool into users’ hands.