Pocket Congress is a simple menu of current legislative activity and bios of current members of the 113th Congress.
TrakBill is a subscription based service but monitors legislation in real time.
Congressional Record made mobile by the Library of Congress allows you to enjoy - or not - Congressional proceedings and debates on a daily basis.
For more information on these Apps and others check out LTN App Bar: Keeping Tabs on Congress.
Most Apps run only on iOS but Android versions are in the works.
Ernster, the Virtual Library Cat
Above the Law - A Legal Tabloid - News, Gossip, and Colorful Commentary on Law Firms and the Legal Profession