flutter_iap_plus

A Flutter package for in-app purchase with 5 ready-made subscription UI templates, plus a tiny BLoC-style state container so any widget can react to the user's premium status.

Supports iOS and Android, single or multiple product ids.

Features

• Drop-in PurchasesManager singleton — handles init, buy, restore, and persistence out of the box.
• 5 polished paywall screens (templateIndex: 1..5), all customizable via TemplateDataModel.
• Reactive widgets — IAPBuilder, IAPListener, IAPConsumer — modeled after flutter_bloc.
• Unified purchaseEvents stream (pending | success | restored | canceled | error).
• Configurable product duration, debug mode (mock store), and logger injection.
• Multi-product support for weekly / monthly / yearly tiers.

Installation

dependencies:
  flutter_iap_plus: ^1.0.0

Quick start

import 'package:flutter/material.dart';
import 'package:flutter_iap_plus/flutter_iap_plus.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await PurchasesManager.instance.init(productId: 'com.app.weekly');
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Demo')),
        body: IAPBuilder(
          builder: (context, state, isPremium) {
            return Center(
              child: isPremium
                  ? const Text('Premium user')
                  : FilledButton(
                      onPressed: () => PurchasesManager.instance
                          .openPurchaseScreen(context: context),
                      child: const Text('Go Premium'),
                    ),
            );
          },
        ),
      ),
      builder: (context, child) => LoadingWidget(child: child!),
    );
  }
}

Documentation

The full integration guide — including UI customization, error handling, multi-product setup, and a complete API reference — lives in USAGE.md.

A runnable example app is in example/.

License

MIT — see LICENSE.