I need a lightweight Android application that generates revenue through a single monthly-subscription plan—no ads or offerwalls, just a clean pay-to-access model. Core requirements • Implement Google Play Billing Library to handle a monthly subscription. • Lock premium content/features behind the active subscription status and gracefully restrict access when it lapses. • Show a concise “Subscribe / Manage Plan” screen and a minimal dashboard once the user is active. • Deliver a basic, modern UI (Material-3 preferred) that’s easy for me to re-skin later—no elaborate graphics needed. Deliverables – Production-ready APK for current Android API level. – Complete, well-commented source code (Kotlin or Java). – Short README explaining how to change product IDs and publish the app. This is an initial MVP, so keep it lean and straightforward; once it’s live and earning, I’ll consider a larger follow-up phase for analytics or referral add-ons.