-You can cancel the free trial or subscription at any time by turning off automatic renewal through iTunes account settings to avoid being charged.
-The subscription will be automatically renewed unless you turn off automatic renewal at least 24 hours before the end of the current subscription period.
-The free trial subscription will be automatically renewed unless cancelled 24 hours before renewal.
-The renewal fee will be charged to the account 24 hours before the end of the current period, and the renewal fee will be determined.
-The renewal fee is equal to the value determined by "Apple's App Store matrix" equal to the subscription price in US dollars.