Unify Stripe web and RevenueCat/App Store purchases behind one server-owned Supabase entitlement model, with signed webhooks, row-level security, and stale-event protection. Built with TypeScript and Capacitor for cross-platform subscription apps.

Demo: https://cross-platform-billing-kit-demo.vercel.app — a public evaluation surface using fictional/sanitized data. Working source is delivered privately after purchase, not through the demo.

Delivery & access: One-time purchase, delivered as files via Whop. You get 30 days of hosted download access to the purchased v1.0 release. The included commercial source license governs your use of the downloaded copy and does not expire — only the hosted download window is time-limited.

Support: Reproducible defects in the shipped package and clarification of documented setup steps. Custom implementation and consulting are not included.

This is a source-code starter kit. No fake testimonials, sale counters, urgency claims, revenue guarantees, App Store approval guarantees, or retention guarantees are made about outcomes from using it.