How do I identify adware when browsing Apple's App Store? I'm new to iOS and setting up a new iPhone. Can someone please explain how to avoid adware when choosing apps in the App Store? I will not install adware on my devices, and I'm happy to pay for apps that are free of any advertisements.

For context, here is a screenshot of adware in Google's Play store which clearly labels it as such:



And here is the same app in the App Store, which fails to mention ads:



I'm looking to install a few games and so far I am unable to do so due to a lack of information...have I overlooked something?
As far as I know, there is not an equivalent in the App Store. 
If this is a feature you'd like to see implemented, go here to leave product feedback.