If you don’t have a credit card but want to make a purchase on Apple’s App Store, you may now use GCash and PayMaya as an alternative mode of payment.
GCash and PayMaya can now be used to purchase apps and pay for in-app purchases. To add them as payment option, go to the App Store -> Account -> Tap on your account name -> Manage Payments -> Add Payment Method -> select GCash (or Paymaya) then log to your account.