Flurry

Flurry Analytics from Yahoo is great for tracking the performance and usage of mobile apps, and is considered an industry standard, with over 170,000 app developers currently using their service across over 540,000 apps. Flurry allows you to gain insights into the user path through your app, charting various events along the way, so you can better segment and optimise for conversions. Benchmarking against other sites, along with unique demographic insights complete a mobile specific analytics package that was built with mobile app developers in mind.

http://www.flurry.com/