Audacity features a tool called but this isn't true Autotune.
But for quick, one-off corrections on an existing recording, Audacity with MAutoPitch remains a fantastic free solution. can you autotune in audacity
If you want to fix a few off-key notes, Audacity works fine. If you need real-time, robotic Auto-Tune or detailed pitch graph editing , you’ll need a DAW like Reaper, FL Studio, or Logic Pro (or a dedicated plugin like Antares Auto-Tune Access). Audacity features a tool called but this isn't true Autotune