Stateline's Melissa Maynard recently reported on the phenomenon and linked to a National Association of State Chief Information Officers site that catalogs 160 or so apps from around the nation.
The most common mobile programs connect users with their state's motor vehicles agency or provide state parks' information. Many help voters locate polling places or look up contact information for their elected officials.
Other apps are more tourism- and business-minded. "Delaware Fresh," gives users an interactive map that shows more than 80 farm stands and markets in the state.
And New York promotes its lottery with the "Yo-Yolanda" app. The Apple App Store description:
Spin your yo-yo like a New Yorker with Yo-Yolanda Vega! This yo-yo application from The New York Lottery shows you how to perform iconic tricks like The Brooklyn Bridge, Lady Liberty, The Niagara Fall and The Perfect Slice. The more tricks you master, the more points you get. NY Lottery announcer Yolanda Vega will be there to cheer you on. And after you're an ace with the yo-yo, you can check the NY Lottery winning numbers to see if you've really hit it big.
Please play responsibly. You must be 18 years or older to purchase a Lottery ticket.
PHOTO CREDIT: An Apple iPhone and a Samsung Galaxy. 2012 AP Photo / Ahn Young-joon