Can I use the same case for iphone 4 and ipod touch 4?

I have an ipod touch 4th generation and I found a really cool case for it, but the case is for iphone 4. Could I still use that case on my ipod or would it be a different size?

You should be able to, and if not, then you will have to buy a new one.

They are different sizes, Genius.

No, they are different in all dimensions. Buy a new case for the iPod touch 4.

Iphone 4 and ipod touch 4 have different designs.

you could be able to use the same case for both but it won't be easy.