Abstract: An advertisement analysis system generates reports that include ad share or spend information within mobile applications. The system identifies a list of mobile applications to track and scans for a known software development kit (SDK) code within each application. If a known ad network SDK is found, the advertisement analysis system simulates the mobile application by plugging in the application having the known SDK within a test application. The test application sends network requests to the ad network to determine a publisher-id pattern of the ad network. The advertisement analysis system searches for the determined pattern within each mobile application and stores it as a key. The advertisement analysis system sends requests to the ad network using stored keys, and extracts ad information from the responses of the ad network. The advertisement analysis system aggregates the ad information and generates an ad report that includes the ad share/spend information.