I'm a developer so the most difficult part to me looks like creating the graphics. Did you make those yourself or pay a designer?
i made them all myself other than the penguins that i got from a site that is in the description of the app. and the voices i made myself but the rest were the same thing, taken from the sites in the description. all are free clip art sounds that are allowed to be used in apps according to the sites i used.
but yah, i'm not graphics designer or anything either. but the clouds, iceberg, and water i did myself, as well as the text, buttons, scoreboard, and other little things. only things that i didn't do were the penguins.