I have this app on my Kindle Fire and I really enjoy it. I got it for my iPad and because I find the ads distracting, I paid the $0.99 to remove them. Unfortunately, the only effect was to have the game start freezing/crashing perpetually. Which might have been less annoying if it had also removed the ads, but it didnt.
Paper Tigers about Aces Spades, v1.0.5