15 Free Autotune VST Plugins

Graillon 2 offers real-time vocal tuning and creative tone shaping for producers and singers. It combines pitch correction, formant shifting, and pitch-shifting to achieve both natural and robotic sounds. Its built-in compressor, gate, chorus, preamp, and bitcrusher give more polish and control.

It includes three pitch engines, letting users choose between classic and updated tones. Optional tools like Pitch-Tracking Modulation, keyboard tuning, and a doubler expand vocal styles. Graillon 2 works across major systems and plugin formats, making it reliable for studio or live use.

Multiply 2 is a free chorus plug-in that creates thicker, wider sound without harsh comb-filtering. Its phase-randomizing filters make up to six added voices feel natural, from subtle doubling to a room full of performers.

Shape the effect with frequency and volume modulation, stereo spread, pre-delay, and a built-in five-band equalizer. Multiply 2 supports mono and stereo processing in AU, VST, VST3, and AAX formats on Windows and macOS.

Old Skool Verb is a free stereo reverb plugin by Voxengo for Windows and macOS. It provides room, plate, and hall modes suited to vocals, piano, pads, guitars, and selected drum sounds.

Its controls adjust space, time, pre-delay, stereo width, damping, EQ, and wet-dry balance. The plugin includes presets, A/B comparisons, undo and redo, zero-latency processing, and VST, VST3, AAX, and AudioUnit support.

Melda MAutoPitch offers automatic pitch correction for vocals and monophonic instruments, helping you keep notes in tune quickly and accurately. It includes controls for depth, speed, and scale so you can fine-tune how natural or robotic the tuning sounds.

The plugin also adds formant shifting and stereo width options for creative vocal shaping. These tools let you adjust voice character or widen the mix space. Available free in the MFreeFXBundle, MAutoPitch is a simple and effective solution for both clean tuning and stylistic effects.

Vocal King offers an easy way to make vocals sound clear, strong, and upfront in any mix. It combines presence, tone shaping, and compression tools to bring life to recordings. Useful on more than just vocals, it can also add warmth and focus to instruments or full tracks.

Its main controls adjust tone and dynamics quickly—tightening low frequencies, adding smooth compression, and brightening high end without harshness. With four tone modes and clear metering, Vocal King helps users shape their sound fast and keep tracks balanced and polished.

Autotune Evo offers two main ways to fix or shape pitch in vocals and instruments. Its Automatic Mode quickly detects pitch and corrects notes to a chosen key or scale, making it useful for live shows or fast studio work. The Retune Speed control lets you adjust how natural or robotic the tuning sounds.

For more detailed edits, the Graphical Mode displays each note’s pitch on a timeline so you can draw or move notes for precise results. Tools like Formant control, Vibrato settings, and Transpose options let creators fine-tune tone, expression, and tuning style across any genre.

VstSpeek is a free vocal synthesis plugin that recreates the robotic, lo-fi speech sound of the Commodore 64. Enter text, choose a preset, and trigger speech with MIDI. Pitch, speed, mouth, and throat controls shape the voice.

The plugin supports MIDI velocity and pitch bend for live control. It runs on Windows in 32-bit and 64-bit VST formats, with a Mac OS X version available. It is designed for electronic music effects, not realistic speech synthesis.

GVST GSnap offers pitch correction for vocals and instruments, letting you adjust tuning from natural fixes to strong robotic effects. It works on single melodic lines and includes controls for detection speed, correction strength, and scale selection for clear and flexible results.

With MIDI input, GSnap can match recordings to new melodies or create layered harmonies. A visual pitch display helps track tuning changes, while controls for attack, release, and vibrato add expressive shaping. It’s a simple, free tool for polishing or reshaping vocal performance.

DSP-2 is a vocal insert effect that combines an intelligent dynamic processor, selectable compression, three saturation modes, and a four-band EQ tuned to vocal frequencies. It also includes controls for presence, clarity, low-mid mud, and high-end air.

A Schroeder-based room emulator adds adjustable ambience, while input/output VU metering helps track levels. Attack, release, output, mix, and bypass controls support quick checks. DSP-2 runs on Windows as a 32-bit VST plugin.

KeroVee is a pitch correction plugin for Windows that gives vocals an autotune-style effect. It can adjust pitch in real time, mix corrected and raw sounds, and even shift entire notes up or down. Its controls allow precise tuning for both natural and robotic tones.

KeroVee offers tools like scale selection, pitch graphs, and note filters to match your song’s key. With extra settings for tone, formant, and pan, you can shape how the voice sits in your mix. It’s a simple way to fix pitch or create unique vocal effects.

EasyVox is a Windows VST plugin that combines vocal compression, limiting, noise gating, and enhancement in one mono vocal strip. It also includes autogain, pre-limiting, input and output gain, and level meters.

Its three-band equalizer offers male, female, and off models, plus fine adjustment and low, mid, and high filtering. A vocal doubler adds width, while reduction and output meters show processing activity.

VocEQPro is a four-band mono vocal equalizer for Windows 32-bit VST hosts. Enter lyrics and play notes from a MIDI keyboard, then shape low, mid, and high frequencies across a range from 65 Hz to 15 kHz.

Male, female, and default presets help adjust vocal tone, while Pre, Mid, and Air modes add extra color. VocEQPro-C also includes a compressor, automatic limiter, limit light, and VU meters for level control.

Autotalent is a real-time pitch correction and auto-tune plug-in for mono tracks. It limits notes to a chosen scale and can create tuned vocals, pitch-shifted parts, or pronounced vocal effects. Controls include correction strength, mix, glide, tuning, and semitone shift.

Note sliders set correction for each chromatic note, while formant shifting changes vocal tone. Autotalent is available as a VST or AU plug-in for Windows and Mac in 32-bit and 64-bit versions. On stereo tracks, the left channel is copied to the right.

Side Brain’s Autotuna is a vocal pitch correction plugin for Windows and Mac. It lets you choose a song key, scale, and 12 note patterns, then adjust correction strength, thresholds, quality, and the mix of dry and corrected sound.

The plugin can follow scale choices from Push or Live and supports Ableton Live 12 Scale Awareness. It includes note-by-note switches, pitch changes in cents, output gain, and saved pattern import. Max for Live and Ableton Live Suite 10 or newer are required.

Son of a Pitch is a Windows 32-bit VST effect for shifting incoming audio by up to three octaves higher or lower. Use the main pitch control for manual changes, or shape movement with a host-synced LFO and selectable waveforms.

Its filter section adds two state-variable filters and a Butterworth filter, with cutoff and resonance controls. Filter and pitch LFOs offer adjustable rate, depth, amount, waveform, and tempo sync. Bypass the filters for direct pitch processing.