Not sure if someone else has mentioned this, but I have found the game in the Australian app store.
https://itunes.apple.com/au/app/crazy-defense-heroes/id1300027167?mt=8
I found it because an ad popped up while i was playing War Robots. (nice surprise!)
So there is definitely marketing going on.
I don't currently hold the share, but keeping track of it, especially waiting for the next stats for CDH.