If you’re getting a tax refund this year in the U.S., and want to track the status of the refund, you can do so on your iPhone, iPad, or Android Device with an official IRS app, IRS2Go. The app is available as a free download in the iTunes App Store, and in the Android Market.
According to Mobiputing, you should be able to use the app to track your refund about three days after you get your acknowledgment email following your filing. If you file by mail, however, this will take three to four weeks. The app has some other features as well, including tax tips from the IRS.