Which I will always argue as BS, because the App store is FULL of freemium junk, and the top 10 highest grossing and top ten apps are always freemium games. If iOS users were so minted why is the app store full of freemium junk? I would also argue that the iOS store started the freemium app craze.
The Android app store has tons of apps, iOS has piracy issues with all those jailbreak devices running stolen apps.
I am yet to see a freemium Android app that runs the paymeium business model on the iOS store, because you hardly ever get an iOS app now where it doesn't have in app purchases.
The freemium business model was made to milk more money pure and simple, it had nothing to do with piracy, it is an utterly fantastic business model for game developers, and adverts are a MASSIVE stream of money for devs as is data mining off you and selling that data, people should read this article made by this sites sister site, a fascinating insight into how game and app devs literally sell your information for massive profit, oh and toucharcade is a well known iOS games site first and foremost, it just might make you lot think differently about the wonderful free high quality apps on Apples app store...
http://toucharcade.com/2015/09/16/we-own-you-confessions-of-a-free-to-play-producer/