The Dediserve / OnApp iPhone app is available for free for all customers, and can be used to manage your cloud server, or indeed your entire cloud datacentre.
To get started - grab the app from the AppStore - http://itunes.apple.com/us/app/onapp/id405042545?mt=8
Once installed on your device, run the application and enter your credentials:
If you are not sure of your username / password for your cloud machine or Cloud Datacentre, drop a line to firstname.lastname@example.org
Once you click Go, the system with Authenticate and Download your machine data:
You will then get the default Dashboard with your machine overview, current allocation utiisation and recent activity log.