An app analytics company says that news apps generate the longest periods of use among iPad owners. "Based on data from apps subscribing to the firm’s analytics platform, users spend over two and a half times as much time on news apps than on apps in general," the company writes. "Getting a news app onto an iPad user’s device seems to generate extremely long interactions between app and user." Health and reference apps also were used for long periods of time. People opened gaming apps more often than news, but they didn't use them for as long. || Related: Most e-reader owners are women, while tablets are owned by men