Hey! I am B1 App developer, and I've been monetizing my app for few years already.
At first, I launched 320x50 banners only, then I also tried 300x250 banner. CPMs were quite good, but not too high, to be honest.
Then I started to monetize with Epom Apps and they suggested me to try native ads. That was a right decision, as with native my eCPMs raised almost in 4 times comparing to banners. After good results with native, I also implemented rewarded videos, and interstitials. The best experience I had with rewarded videos, of course. That's why I often recommend to give them a try.
Now I am looking for new interesting ad formats. Which ad formats now work better than interstitial or rewarded videos? Maybe something new I've never heard before? I am sure there is a way to earn even more than I have now with native, interstitial and rewarded videos.
Thank you all.