No-ad option was pricier than most. I did pay it because I _was_ enjoying the experience enough. However, the latest update borked my game, and I lost all progress and can't start a new game. I sent an email in for support at that time, but I've yet to receive a reply. The fun I was having saved this from being a 1-star review. It's a very fun game if you're very detail oriented and slightly OCD.