flutter_inapp_purchase 9.0.0

In App Purchase plugin for flutter. This project has been forked by react-native-iap and we are willing to share same experience with that on react-native.

flutter_inapp_purchase

A comprehensive Flutter plugin for implementing in-app purchases that conforms to the Open IAP specification

📚 Documentation

📖 Visit our comprehensive documentation site →

📦 Installation

dependencies:
  flutter_inapp_purchase: ^8.0.0

🔧 Quick Start

Basic Usage

import 'package:flutter_inapp_purchase/flutter_inapp_purchase.dart';

// Create instance
final iap = FlutterInappPurchase();

// Initialize connection
await iap.initConnection();

// Fetch products with explicit type
final products = await iap.fetchProducts<Product>(
  skus: ['product_id'],
  type: ProductQueryType.InApp,
);

// Request purchase (builder DSL)
await iap.requestPurchaseWithBuilder(
  build: (builder) {
    builder
      ..type = ProductQueryType.InApp
      ..android.skus = ['product_id']
      ..ios.sku = 'product_id';
  },
);

Using with AI Assistants

flutter_inapp_purchase provides AI-friendly documentation for Cursor, GitHub Copilot, Claude, and ChatGPT.

AI Assistants Guide

Quick links:

• llms.txt - Quick reference
• llms-full.txt - Full API reference

Development

See CONTRIBUTING.md for development setup and guidelines.

Singleton Usage

For global state management or when you need a shared instance:

// Use singleton instance
final iap = FlutterInappPurchase.instance;
await iap.initConnection();

// The instance is shared across your app
final sameIap = FlutterInappPurchase.instance; // Same instance

Powered by OpenIAP

flutter_inapp_purchase conforms to the OpenIAP specification — an open, vendor-neutral interoperability standard for in-app purchases. OpenIAP provides:

• Shared specification — Common types, error codes, and purchase flows across all platforms
• Generated type-safe bindings — Swift, Kotlin, Dart, and GDScript from a single GraphQL schema
• Platform implementations — openiap-apple (StoreKit 2) and openiap-google (Play Billing 8.x)
• Verification profiles — Standardized receipt validation and purchase verification patterns

Other libraries built on OpenIAP: react-native-iap · expo-iap · kmp-iap · godot-iap

Learn more about the OpenIAP standard →

Community

Have a question or need help? Ask in flutter_inapp_purchase Q&A Discussions.

For bug reports, please open an issue.

Sponsors

💼 View Our Sponsors

📄 License

MIT License - see LICENSE file for details.