When a user clicks on a facebook mobile install ad on ios an app store window pops up.
As answered here What happens to an iOS deeplink when the app is not installed? it's not possible to put any custom parameters to be an launch parameter on the first app launch.
Is there a way after the downloaded app was opened and the user logged in with facebook to get information about which ad he clicked befor? Because actually there is a connection between ad, itunes app id, and facebook app id, isn't it?