By charging a regular fee, subscribers give users continuous access to premium content or services, giving developers a steady source of revenue. To effectively leverage in-app purchases and subscriptions, developers musssttakingt carefully design their app's monetization strategy to offer compelling content or features that users are willing to pay for. Offering a combination of premium & free content may be one way to do this while still making sure that all users can access the app's essential features. Also, to keep users interested & promote recurring purchases or subscriptions, developers should update their app frequently with fresh features or content.