The Apple billing system is useful for its users. https://teague-wolf.mdwrite.net/understanding-apples-billing-and-subscription-model Through centralizing all transactions using an Apple ID account, users are able to control their subscriptions and also buy items in just one or two clicks. https://dpaste.com/ECLR9WUR2-preview In addition, Apple provides a transparent and intuitive interface that allows customers can check their purchase past history, track subscriptions and edit payment information.