The most direct way to get Auto-Tune on Mac for free is through the Auto-Tune Unlimited subscription trial. Antares Support Center
If you do not have the budget for Antares Auto-Tune (which starts around $100 for the basic version and goes up to $400+ for Pro), you do not need to resort to piracy. There are excellent, legal alternatives that are safe for your Mac: Antares Autotune Free Download Mac UPD
One option for Mac users is to download the free trial version of Antares Auto-Tune from the official Antares website. The trial version allows users to test the software for a limited time before deciding whether to purchase a license. The most direct way to get Auto-Tune on