I remember playing this game on iOS sometime between 2011 and 2013. It had a top down perspective and you would use your finger to guide a dragon through a hedge maze. Each level had a different color hedge and ground. I'm fairly certain "Dragon Maze" was its actual name, but searching it online hasn't turned anything up. It may have featured a witch, either in the preview images on the app store or in a cutscene in the game itself.