The app on the android market is called heroclix rules. It has all the rules of play including all of the rules for each superpower, and some of the new mechanics. Its a great app. I am not sure if it is available for the iphone or not.
For anyone who is looking to download and print the rules or any print and play items such as standard objects, just go to www.heroclix.com
. They have a great site that spotlights many of the figures from the upcoming sets including the dials that the figs will have.
If you want to keep up with some heroclix forums, or look into picking up some of the figs from the older sets and you can check out ww.hcrealms.com. Here you can get plenty of info, including looking up any figure that exists. If you are looking for figures with special powers and not sure what is available....just use the filters to search for what youre looking for.