Global revenue from app sales is expected to increase 62 percent this year to $25 billion, according to new research from Gartner.

The Wall Street Journal has the report: “App stores run by Apple and Google Inc. GOOG +1.21% now offer more than 700,000 apps each. With so many apps to choose from, consumers are estimated to spend on average about two hours a day with apps.”

Gartner is also anticipating a growth in cloud services this year. Last week, the company estimated that the public cloud services market will grow 18.5 percent this year to $131 billion worldwide. Here is more from the press release: “Cloud advertising continues to be the largest segment of the cloud services market, comprising 48 percent of the total market in 2012. Gartner predicts that from 2013 through 2016, $677 billion will be spent on cloud services worldwide, $310 billion of which will be spent on cloud advertising.”