Umeng, the Chinese mobile app data analytics provider, announced Alibaba, the Chinese e-commerce giant, had completed acquisition of it three days ago. It still didn’t disclose the price in the press release, but multiple sources, including Umeng staff, told us it’s $80 million.

The company, according to the statement, would still be independent. A source told us that Umeng would take over Alibaba’s mobile advertising business and Jiang Fan, CEO of Umeng, would be in charge of Alibaba’s mobile advertising.

Since the launch of the first app data analytics service in August 2010, Umeng platform now has 180,000 apps and 60,000 developers. It covers 590 million active devices running Android, iOS, Windows Phone and Windows 8. Over 60% of developers in China have adopted more than two of Umeng services, Linda Jiang, VP of Umeng, told TechNode at TechCrunch Shanghai event.

Recently Umeng added mobile game analytics service, social plugins and push notification plugin, aiming to provide one-stop developer services. To be able to offer full round services, the company has reached partnership with third parties like Testin who helps developers test their apps on various platforms.

Although almost all developers, Chinese or non-Chinese who are working on China market, on Umeng platform are based in China, it is found that almost half of the data generated from their apps are from outside China, Linda told us.