Revel Premium

First, turn off auto-renewal for your monthly subscription:

- See http://www.adobe.com/go/revel_my_subscriptions_en for Adobe subscriptions

- See http://support.apple.com/kb/HT4098?viewlocale=en_US&locale=en_US for info on disabling an Apple iTunes subscription

After doing that, wait for the subscription to end, and then subscribe again, this time choosing a yearly option.  Both Adobe.com and Apple app stores offer this option.

Regards,

Peter