The app is called IRS2go, and is available on both the Android marketplace and the iPhone App Store.
The app currently allows you to check the status of your refund, subscribe to IRS news, follow them on Twitter, and it also provides their contact information. I suspect most people will be using it to check the status of their refund.
I’ve tried it, and I must say it’s really simple and easy to use. Not necessarily what I was expecting when I initially downloaded the app.
To check the status of your refund, you simply enter your SSN, filing status (single, head of household, etc.), and exact dollar amount of your refund.
I even used it to check the status of my 2009 refund (though the app prompts you to enter your information for your 2010 return—I suspect that it just pulls the last return you have on file).
The contact option is pretty useful; it not only gives you the contact number for each unit, but also gives you the hours of operation with a link that automatically dials the number (at least in the iphone version).
It’s a win-win situation: you can quickly check the status of your refund—even while waiting in the dentist office— and they get less calls inquiring about refund status.