Cookie is not a standard or widely known application or feature on macOS. There[SQ]s no built-in macOS utility or common third-party app with that name related to core system functionality.

It[SQ]s possible you[SQ]re :

*

Thinking of a different name:

Perhaps you[SQ]re misremembering the name of a specific app. Could it be something similar-sounding, or related to managing cookies (like a browser extension)?
*

Referring to a very niche app:

It might be a very specialized or lesser-known application.
*

Encountering a typo:

A simple spelling error could be the reason.

If you can provide more context—where you encountered "Cookie for Mac," what it[SQ]s supposed to do, or any other details—I might be able to help you identify it.