Find Out if Traffic Source is Google Ads inside iOS Apps

I'm trying to figure out if the traffic came from Google Ads Universal App Campaign, inside in an iOS app, because I would like to show these users a different offer in the app.

Anybody knows how to achieve this? I'm using Firebase for tracking. Since Universal Analytics Campaigns has no options for deeplinks, I just can't figure out what to do.

what do you mean by a Universal Ad campaign ?