title: How Android app install tracking works?
body: <p>can anybody here  explain how android app referral tracking works? a friend gave me an android app's google play referral url. And i installed the app and opened it. How does the app developer know that it's my friend who referred me to their app? I know that the link that my friend gave me contains his referral details but if i close google play after completing the app install, how can google play detect that i opened the app? So some unique data is injected into the app while i install it from playstore. am i right? Please explain.</p>