People who may be addicted to buying new phone cases and apps for their iPhone, Android or other mobile tool should know that their efforts and purchases aren't all for naught, as there are 500,000 jobs from the "app economy" in the United States, according to a study by TechnNet and Dr. Michael Mandel of South Mountain Economics.

"America's app economy – which had zero jobs just five years ago before the iPhone was introduced – demonstrates that we can quickly create economic value and jobs through cutting-edge innovation," said Rey Ramsey, president and CEO of TechNet.  "Today, the app economy is creating jobs in every part of America, employing hundreds of thousands of U.S. workers today and even more in the years to come."

The cities with the biggest percentage of app economy jobs include the New Jersey and New York area, the San Francisco/Oakland Bay Area and the Seattle/Tacoma area.

The Tennessean said it may not seem like a big amount of jobs, but many new businesses are being formed by making things such as iPhone 4S cases, LG Viper cases and more. The story from this news source talks to Tennessee resident Jeff Lee – an app developer who is making SevenLunches for restaurants to list their specials for customers – who is one of the people coming up in this economy and doing well in a smaller city.