PaddleRails is a production-ready Rails engine that drops a complete subscription management portal into your application in minutes. It's not just an API wrapper—it's a full-stack billing solution that handles the hard parts of SaaS payments: webhooks, plan upgrades, prorations, cancellation flows, and payment method updates. Fully compliant with Paddle Billing (v2), handling global tax/VAT and localized pricing automatically. Features: - Mountable billing dashboard ready in minutes - Built for Paddle Billing V2 - Two-way sync via webhooks - Beautiful UI built with Tailwind CSS - Uses GlobalID for bulletproof user mapping (no email mismatch issues) - Supports subscriptions on Users, Teams, Organizations, or Tenants - Payment history with invoice viewing and download - Plan upgrades/downgrades with proration - Payment method management No need to build billing UI from scratch. Just mount the engine and focus on your product.