Autotune Patch

Hi all,

I realized retune~ let's you basically do an autotune effect.

I was wondering, is there a patch / Project flying around that also emulates the interface.
Basically for a given sample/buffer to have a curve / piano roll, that let's you assign the pitch for a given section / amount of time.
A little like in the autotune vsts (e.g. snapshot attached).

Is there something like this out there?

all the best
Frank