can't get instagram on my ipod
I have an ipod with ios 6 and I've always had instagram on it. Recently I couldn't taking any pictures because there was no room on my ipod so I deleted instagram with the intention of re-installing it however when I tried it says I need ios 7. Instagrams help center says to download it on itunes on my computer and then sync my ipod, but when I do that my computer also tells me I need ios 7. Anyone know how to fix this?
iPod touch, iOS 6.1.6