A subscription is purchased through your iTunes account or Google Play account and is automatically renewed at the end of the subscription period unless otherwise stated. If a subscription is deactivated during the trial period, if applicable, there will be no charge. Subscriptions can be deactivated in your iTunes Account preferences or from within the Google Play App.
To avoid renewing a subscription, you must deactivate it at least 24 hours before the current subscription period expires. There is no charge for deactivated subscriptions. A deactivation is always free of charge. No refunds can be given for unused periods.