Mobile app monetization company Flurry announced today it has raised an additional $25 million in Series D funding.

The oversubscribed round was lead by Crosslink Capital. Existing investors Menlo Ventures, Draper Fisher Jurvetson, InterWest Partners, Union Square Ventures, First Round Capital and Draper Richards also participated in the round, which brings Flurry’s total funding to $51.6 million. As part of the deal Crosslink Capital partner Nick Mignano will join Flurry’s board of directors.

Originally a mobile analytics company, over the past year Flurry has aggressively diversified its lineup of products and services, expanding into advertising, user acquisition and even cloud-based services. The company is also partnering with Activision to launch a mobile publishing platform.

Although risky, the strategy has been successful for the San Francisco-based company — CEO Simon Khalaf tells All Things D revenues are up 300 percent year-over-year. Flurry is expecting to earn somewhere between $80 and $100 million in revenue for 2012. Khalaf also reports Flurry is “cash flow positive” and looking to IPO as soon as 2013.

According to today’s announcement, Flurry measures more than 1.9 billion app sessions every day and has more than 80,000 clients using its services on Android, iOS, Windows Phone, BlackBerry, HTML5 and even JavaME. The company now tracks 250 million unique smartphones and tablets through its network of 250,000 apps.