How do I change my default credit card for in app purchases?

In-app purchases will use the payment methods added to your Apple ID, in the order they appear in.

If you need to change the default card, go to Settings ➡️ Apple ID ➡️ Payment & Shipping

You can tap edit above the list of payment methods, and drag a payment method up or down to change its position. The Apple ID account cannot be moved from the first location.

Click here, follow the instructions, and see the Learn More section. It isn't possible to preassign charges to different payment methods, except for buying gift cards and redeeming them just before they come.

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