Just to clarify, the Apprenda Platform is distributed based on a yearly license and is installed on your servers. The upgrade process is entirely up to you, although we provide you with release patches every two weeks, and major versions twice a year. An upgrade can take anywhere between half an hour and two hours depending on the size and usage of the environment.
Are you talking about our hosted environment ApprendaCloud ( http://apprendacloud.com/)? If so, please bear in mind that this environment is meant to be used as a hands-on trial. We do not recommend hosting production applications, as we perform regular cleanups and thus cannot guarantee that your application will always be available.