AdMob and Firebase

Question

I have added AdMob advertising in my Android app .

I connected to the AdMob site using this link:

https://firebase.google.com/docs/admob/android/quick-start

Answer 1

AdMob integration can happen without Firebase it is just a recommendation by Google to use firebase along with it to get better app analysis.

Firebase is mostly free except a few features like TestLab and some features have set quota that comes under free tier, one can definitely use firebase along with AdMob and yes for free features nothing needs to be paid and even no need to add a payment method unlike other platforms.