Complete app monetization guide: Learn how you can monetize on your app right from strategies, to tools, to best practices.| Topflight
Learn about using in-app purchase and StoreKit framework to sell items within your apps, like premium content, virtual goods, and subscriptions.| Apple Developer
Provide a seamless experience for auto-renewable subscriptions in your apps. You’ll receive more revenue for qualifying subscriptions after one year, have greater pricing flexibility, and more.| Apple Developer
The App Review Guidelines provide guidance and examples across a range of development topics, including user interface design, functionality, content, and the use of specific technologies. These guidelines are designed to help you prepare your apps for the approval process.| Apple Developer