There are many iPad clapperboard apps out there, this one is different and certainly the coolest. For $200 you not only get the application but you also get your own chevron painted sticks on an iPad case to clap with.
So simple why didn't somebody do it before? Construct a case with clappers that enables the accelerometers within the iPad to sense the clap. Unfortunately you can't buy this product until August this year but as HandHeldHollywood suggest, a quick email to Pomfort might bring this product to market a touch earlier.