Mobile analytics firm Flurry raised $15 million in a third round of funding as it expands its reach.

The San Francisco company operates an analytics service that is used in thousands of iPhone and Android apps. It also runs AppCircle, a recommendation platform that helps game developers spread their games broadly by suggesting apps the user might like. The two services work well together, since the analytics tell Flurry what is on the user’s phone, and the recommendation engine makes suggestions based on what it knows about what’s on the user’s phone.

Flurry’s new round suggest things are going well for the company and for mobile apps on the iPhone and Android.

The round was led by Menlo Ventures with participation from existing investors Draper Fisher Jurvetson, InterWest, First Round Capital and Union Square Ventures. Sonja Hoel Perkins, managing director at Menlo Ventures, will join Flurry’s board.

Flurry will use the money to expand the reach of its products and beef up sales and marketing. In November, Flurry measured 5 billion anonymous user sessions from over 100 million unique devices. To date, Flurry has raised more than $29 million. More than 35,000 companies use Flurry in 60,000 iPhone and Android apps. Flurry has 23 employees.

Rivals include Google AdMob, Tapjoy, Scoreloop and OpenFeint.

Source: VentureBeat.com