App keeps hanging – Spider Solitaire The Card Game Review

I enjoy the game but there are a lot of bugs in the app. I started playing the daily challenge but might need to stop. Recently the app hangs on my iPhone. I think this is correlated with an ad displaying at the top. Other times it drops cards and when you get to playing the final cards, there are cards missing in the sequence.
Review by xxxxjc on Spider Solitaire The Card Game.