Flutter + Supabase Auth + Riverpod + Billing Sync
Essential cross-platform mobile architecture. Features Supabase authentication, Riverpod 2.x state management, and customer license validator.
Every module is structured for maintainability, type safety, and zero bloat.
Pre-configured login and session storage in device secure storage.
Validate user subscriptions and customer license keys seamlessly.
AsyncNotifier architecture for predictable offline-ready state.
Clean, modular file organization designed to integrate into your existing project in minutes.
lib/
├── core/services/billing_service.dart # License & API client
├── features/auth/ # Supabase authentication logic
├── features/billing/ # Paywall & subscription status
└── main.dart # Riverpod ProviderScope setupProduction-grade payment processing with cryptographic Svix webhook verification.
Pre-configured signature verification handler for order.created, customer.subscribed, and refund events.
Buyers can manage invoices, upgrade license seats, and access updated repositories anytime.
Instant automated repository invitation via Polar.sh with continuous git pull version updates.
Every starter kit and UI primitive adheres to strict engineering benchmarks.
End-to-End Strict TypeScript & Dart
Verified Webhook Security
Clean, Modular Architecture
Continuous Maintenance
Everything you need to know about licensing, setup, and support.
DevPreFlight provides production-grade starter kits and boilerplates categorized into 3 distinct tiers: Tier 1 (Micro Modules, $19-$29) for single-purpose utilities like webhook handlers or UI kits; Tier 2 (Core Feature Kits, $49-$69) for core auth, payment, and database setups; and Tier 3 (The All-in-One Mega Starter Kit, $99-$149) for complete full-stack SaaS boilerplates with lifetime updates and instant GitHub repository access.