Cross-Platform Flutter SaaS Boilerplate for iOS, Android & Web
Ship beautiful native mobile & web apps with Flutter 3.x and Dart. Includes Supabase Auth, Riverpod 2.x state management, web-to-app checkout sync, In-App Purchases, and push notifications.
Every module is structured for maintainability, type safety, and zero bloat.
Allow users to subscribe on the web and automatically unlock features in the mobile app.
Separation into Data, Domain, and Presentation layers following official Flutter best practices.
FaceID, TouchID, and Supabase OAuth with encrypted keychain tokens.
Firebase Cloud Messaging integration for onboarding, updates, and customer retention.
Clean, modular file organization designed to integrate into your existing project in minutes.
flutter_app/
├── lib/
│ ├── core/ # Theme, router, and Billing SDK service
│ ├── features/auth/ # Supabase login, OTP, and biometrics
│ ├── features/billing/ # Paywall & license validator
│ ├── features/dashboard/# Native dashboard & user settings
│ └── main.dart # App entrypoint with Riverpod ProviderScope
├── android/ & ios/ # Pre-configured native build configs
└── pubspec.yaml # Curated production dependenciesProduction-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.