PitchCure

PitchCure is a free vocal pitch correction plugin by Saint Mike DSP for Windows and macOS. It doesn’t reinvent the autotune category, but it exposes more of the pitch correction algorithm on the front panel than most of the minimal free options. The Speed knob sets how aggressive the correction is, going from transparent tuning all the way to hard T-Pain-style snapping. Transition controls how the voice moves between corrected notes, so you can dial in instant hard snaps or smooth portamento glides.

My favorite is the Humanize control. It preserves vibrato and natural expression, so you can keep the correction strong without the performance going robotic. There’s also a Color knob, which is a tilt EQ that adds chest warmth on the dark side or air on the bright side. For setting up the correction, you can let PitchCure auto-detect the key with one click, build a custom scale using the Edit Notes matrix, or switch to MIDI Target mode to force the vocal to follow the exact notes you play on a controller.

There’s also a vocal range selector to help the algorithm track better. The plugin runs in two modes. Real Time mode has near-zero latency for tracking in the vocal booth, and HQ mode is meant for mixdown when you want maximum quality. It’s optimized for low CPU, so you can stack it across a dozen vocal layers in a session. I tested it on my M1 MacBook Air and it ran without issues.