App is fine. You can play and win without spending money. But if you want anything great you will have to spend months grinding for a chance to get it or spend a lot of money to get it. The most annoying thing about the game is the constant begging for reviews. Every time you get a mythic level card they want you place a new review. Even if you have already given them a 5 star before. This is why I am changing my review from 5 to 1 stars. They are annoying and I want it to stop.