As developers attempt to tailor their applications to customers, obtain more information about how they are used and how reliable they are, the use of app analytics services on mobile devices is now very common. During this talk, we will look at the usage patterns of analytics services by the most popular apps in various categories, such as games and productivity applications, as well as different application business models (free, freemium, paid, etc.). What does it all mean for your privacy? Can you prevent it? What types of apps are the greatest offenders? How can you detect it? These are questions we will answer, as we look at the patterns, the analytics providers used, and explore the type of data that is sent as well as the privacy policies of these analytics service providers.