This app worked consistently! I really enjoy playing when the app is working. Its definitely a challenging game that I find fun and somewhat addictive. It has been plagued lately with a bug hat either doesn’t let you open the game, or kicks you out of it before completing the first move. So frustrating! The developers have updated the app several times in the past few weeks, so I know they are working on it. So far, unfortunately, without success. Once these problems are results loved I would gladly add a few more stars.