Ad free is trash. Power ups don't exactly carry over into the next level. I spent 2 hours on the same level getting my fire stronger and stronger until I could just walk through everything without any slow down, but then I entered the next level, and boom! Back to waiting for snow to melt forever. Either 2 hours of grinding the same level was necessary just for that, or the upgrades are meaningless from level to level. Either way, that's also trash. I'm done with this game.