I've pretty much given up on mobile gaming. People just aren't willing to pay money for a quality game. These days if I play a game on my phone or tablet it's usually a board game (one of the few genres that's mostly free from exploitative IAPs) or an emulator.
I've played some where I've thought - "oh, this game would be so much better if it wasn't stuck in a IAP addiction mode".
I never get very far in these games due to the artificial IAP barriers.