Cydia for ipod touch
Cydia is the best apps for customize iPods. It’s same as the Apple app store. But cydia gave you many featured tweaks and apps than Apple app store.
Cydia for ipad
iOS 7.1 and iOS 7.1.x versions released by Apple with more compatibolity and stability. You can upgrade your idevice upto iOS 7.1 if the device is one of later