GREEN BAY - Business is booming at the App Store created by Apple.
The company says holiday sales reached an all-time high.
ZYMO Interactive, on Green Bay's east side, has at least 20 downloadable apps in the App Store.
"We get individuals that come in that are looking to start a company or we get a big business that comes in that's looking to either build a customer facing application or one that maybe helps improve their business operation," said Adam Larson, ZYMO Interactive President.
Developers spend hours in front of their computers creating some of those go to apps you might download on your cellphone.
"Our most successful apps have been downloaded a little over a million times," Larson said.
At the App Store, Apple says within a two week period, customers spent more than $1.1 billion.
The company says, customers spent $144 million on apps and in-app purchases January 1.
"If you actually took a look at the top grossing apps or the apps in general, very few of them are developed by Apple," said Mark Glantz.
Glantz is an assistant professor of communication and media studies at St. Norbert College.
He says smartphones are unique and make it easy for consumers to have everything they need because it's all in one place.
"The phone is your source of entertainment and the phone is your source of news and it's possible now that, if you have a good smartphone or tablet, that's your radio and it's your TV," Glantz said.
While Apple is bringing in a lot of cash, Larson says it can be difficult to stand out in the app store because there are a handful of app development companies that dominate the market.
"For a developer that's putting an app on there or a company that's looking to launch, that's not really a good thing because you're one of a million or one 10 million," Larson said.
Larson says marketing is key and the creators of new apps need to make sure their product stands out.
"It does take some money and it takes some actual blood, sweat, and tears to actually get your app to be successful," Larson said.
Larson says developers also have to continually improve their product to keep users interested.
Apple says the most popular categories in the App Store are gaming, social networking, and entertainment.