USA.gov Mobile Apps Gallery: http://apps.usa.gov/
The White House: latest news from the White House news room, featured videos, and live video streaming
Free
House and Senate Member Guide - pictorial directory of the 112th Congress; also searchable by name, party affiliation and state, accompanied by brief history of the congressman's time in office
Free
Congressional Record: read the daily edition, plus view archived editions back to January 14, 1995
Free
PocketJustice: the business of the Supreme Court, on the go, including access to abstracts on the top 100 Supreme Court cases, audio files of oral arguments and decision announcements for many cases, and profiles on the justices.
Free; other versions of this app can be purchased in order to receive access to more content
IRS: get your tax refund status, subscribe to tax updates, and follow the IRS on Twitter
Free
OpenRegs: this app allows you to monitor agencies' regulatory activities, including upcoming comment periods and final notices; you can star ones you are interested in for later reference, and email them to yourself or others
Free
Recalls.gov: covering consumer products, motor vehicles, boats, food, medicine, cosmetics, and environmental products
Free