I tried the demo, but uninstalled it in less than 5 minutes. It kept changing the selected shape to something else without my telling it to -- you have to constantly watch over on the right side of the screen for what shape is selected.
For example, I was marking off hexagons, completed a row, and when I marked another hexagon in a different row, PFFFFTT! it had changed the shape to a circle without my telling it to and marked the hexagon I was trying to select as a mistake. I don't need that sneaky garbage. Constantly having to check that the game isn't trying to pull a fast one on you has nothing to do with logic or puzzle solving and is not my idea of fun.