We’re honored to have made the latest AppsFlyer Performance Index. The study ranks the top Media Sources in Mobile Advertising. Highlighting trends and changing dynamics in the mobile app marketing and advertising ecosystem, the index offers an in-depth look at the media sources that have the ability to scale app user growth, deliver strong retention rates and attract the most engaged app users. The index was based on 40 million installs with cost data (from over 50 networks with a minimum of 10,000 installs), and roughly $150 million in revenue from over 800 apps that measure both cost and revenue. The Index…