Update:
Uploaded one more iOS app with IAP. Working on another, reskinned version of this app which is more niche-specific.
Also, I am working on updates which make the apps have a higher conversion rate.
Earnings:
Daily $80-150 from ads through various Ad networks,80% from AdMob tho
$70-120 through iOS IAPs
About advertising:
I just took a deep look into my ad spending and the ad networks. From what I see so far Facebook/Meta ads not only convert miserably, but they also give wrong information for my iOS apps.
Through Appsflyer I can exactly see how many app installs I get organically. This number is quite stable. Then I make Facebook ads and this number doesn't change much. Maybe +10 downloads. But on my Facebook Ads Manager, it says 50-70 downloads.
So far I found Google Ads working the best. I can actually see a real + on Appsflyer and AppStore Connect.