InAppKit

The simplest way to add premium features to your Swift app

Transform any SwiftUI view into a premium feature with just one line of code. InAppKit handles StoreKit complexity so you can focus on building great features.

ContentView()
    .withPurchases("com.yourapp.pro")

🎨 Visual Showcase

🚀 Ready-to-use Paywalls Beautiful, localized paywalls that work out of the box

💳 Smart Purchase Options Flexible pricing cards with marketing badges and savings indicators

✨ What You Get

• 🚀 One-line setup - Add premium features instantly
• 🎯 Type-safe features - Enum-based feature gating prevents errors
• 💳 StoreKit integration - Handles purchases, receipts, and validation
• 🎨 Customizable paywalls - Beautiful UI out of the box, fully customizable
• 🌍 Localization support - Built-in internationalization with fallback safety
• 📱 iOS 17+ support - Built with latest SwiftUI and StoreKit 2

🚧 Requirements

• iOS 17.0+
• Xcode 15.0+
• Swift 5.9+

📦 Installation

Swift Package Manager

dependencies: [
    .package(url: "https://github.com/tddworks/InAppKit.git", from: "1.0.1")
]

🚀 Quick Start

1. Add InAppKit to any view

import InAppKit

ContentView()
    .withPurchases("com.yourapp.pro")

2. Gate premium features

Text("Premium Content")
    .requiresPurchase()  // Shows paywall if not purchased

3. That's it!

InAppKit automatically:

• Creates and displays paywalls when needed
• Handles StoreKit purchases
• Validates receipts
• Remembers purchase state

📚 Learn More

🎓 Getting Started Guide

Learn core concepts: Products, Features, and Paywalls

💰 Monetization Patterns

Choose the right strategy: Freemium, Premium, or Subscription

🎨 Customization Guide

Customize UI, add marketing info, and advanced configuration

🌍 Localization Guide

Multi-language support with 30+ localization keys and fallback safety

📖 API Reference

Complete API documentation and advanced features

🎯 Real-World Example

enum AppFeature: String, AppFeature {
    case removeAds = "remove_ads"
    case cloudSync = "cloud_sync"
    case exportPDF = "export_pdf"
}

ContentView()
    .withPurchases(products: [
        Product("com.yourapp.pro", features: AppFeature.allCases)
    ])
    .withPaywall { context in
        PaywallView(products: context.availableProducts)
    }

🛠️ Support

• Issues: GitHub Issues
• Discussions: GitHub Discussions
• Documentation: docs/

🤝 Contributing

We welcome contributions! Please see our Contributing Guide for details.

📄 License

Apache-2.0 License. See LICENSE for details.

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🙏 Acknowledgments

• Built on Apple's StoreKit 2
• Inspired by SwiftUI's declarative approach
• Designed for modern iOS development

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Ready to add premium features? → Start with the Getting Started Guide

InAppKit - Because in-app purchases shouldn't be complicated. 🚀

Made with ❤️ by the TDDWorks team