Apple Search Ads promo credit
When you first set up your Apple Search Ads Basic account, we automatically give you a $100 (US) credit to try it for free and see the results for yourself. You’ll see this at the top of the Billing page when you add your credit card.
To verify that a promo credit has been applied to your account, please visit the Billing page within Account Settings. The date of the last applied credit appears in the Promo Credit section located below your payment method details.