SO slow
Gameplay is way too slow. It feels impossible to advance without paying for things. I get that they want you to pay for it, but if the free version isn't fun - I'm CERTAINLY not taking any chances on the paid version.
Fraudulant Purchases
I paid US$9.99 for no ads (permanently, not a subscription) on my iPhone. All of the ads were still there. Now that I tried to use it on a Mac, the gameplay seems to be locked until I purchase some premium add-on.