People may securely pay for digital things with In-App Purchases through a dedicated store within your app. In-App Purchase is a feature that allows users to add premium features, subscribe to recurring content, and buy virtual objects like a new level or a weapon in a game.

Create a seamless shopping experience. When people use your store, they shouldn't assume they've entered another app. Showcase products and process transactions in a way that feels natural in your app.
Use short, easy-to-understand product names and descriptions. It's ideal if consumers can rapidly scan a list of products and find the ones they want. Use straightforward language and titles that don't wrap or truncate.
Use the confirmation alert that is set by default. To prevent unintentional purchases, the system shows a confirmation alert when someone makes an in-app transaction. Make no attempt to change this notice.