Cannot find where to hook a callback to find out which of my users have installed the mobile app off of a facebook ad campaign:
I've:
want to track which users are coming in from facebook campaigns
thanks!
There is no way to tell if a user who uses your application did so as a result of a Facebook Ad Campaign.
If you need to do cross channel measurement or LTV calculation, you will need to work with one of Facebook's Mobile Measurement Partners.