Any recommendation to monetize an iOS app through ads??

Hi all,

I have an iOS app with some daily users (around 2.5K) and I'm looking for a way to monetize it through in-app ads. I've just heard about Google Admob but I dunno if it is a good service or only is the famous one. Have you ever use it? How was your experience? Do you recommend it or do you go with another?

Any kind of information is useful for my research, thank u all for your time!