OpenTune – AI Vocal Pitch Editor

Tired of your tuned vocals sounding like a thin, phasey mess with pinched formants? We’ve all been there – you capture a fire vocal take packed with emotion, but the moment you try to lock the pitch in, traditional DSP tuning strips away all the warmth and body. Getting vocals to sit clean in the pocket without sounding robotic usually costs a fortune in premium software.

OpenTune completely flips the script by combining neural resynthesis with surgical, graphical pitch correction – giving you elite-level tuning without costing a single dime.

Why OpenTune is a Game-Changer for Your Mix & Workflow

Neural-Vocoder Resynthesis: Powered by RMVPE pitch extraction and a PC-NSF HiFiGAN neural engine, it regenerates your vocals so formants stay natural – no chipmunk vibes or weird tonal shifts.
Surgical Graphical Editing: Ditch the unpredictable one-knob plugins. Draw custom pitch curves, tweak individual note blocks, and drop anchor points for total control over every phrase.
Smart Key & Scale Detection: Instantly detects the key of your track and snaps notes to Major, Minor, Dorian, Pentatonic, or Harmonic Minor scales in seconds.
Flexible Studio Workflow: Fire it up as a standalone app for deep vocal prep, or load the VST3 inside ARA2-compatible DAWs to tune directly on your timeline.
GPU-Accelerated Performance: Uses DirectML on Windows and CoreML on macOS so rendering stays lightning fast, leaving plenty of CPU headroom for the rest of your mix chain.

⚡ Pro Producer Tip: Anchor Your Vibrato Tails

When you’re smoothing out pitch drifts on lead vocals, drop anchor points right at the start of natural vibrato tails before drawing flat correction curves. This snaps the sustain directly on pitch while preserving the singer’s human expression so the lead sits upfront and authentic in the mix.

Tech Specs (Keep it Light)

Formats: Standalone App & VST3 Plugin (with ARA2 support)
Processing Engine: RMVPE Pitch Extraction & PC-NSF HiFiGAN (via ONNX Runtime)
Hardware Acceleration: DirectML (Windows) / CoreML (macOS)
Platform Compatibility: Windows & macOS (64-bit)
Download Size: ~537 MB to 1 GB (Includes neural model weights)
Languages Supported: English, Spanish, Japanese, Chinese, Russian

The Verdict

OpenTune brings serious heat to the freeware vocal production space. By swapping outdated pitch-shifting algorithms for modern neural resynthesis, it delivers transparent, high-end pitch editing that holds its own against top-tier commercial suites. Whether you want to tighten up background harmonies or dial in a crisp, upfront lead vocal, this tool gives you maximum control without choking your mix.

Visit Developer Site

OpenTune.1.7.3.WIN ( 500 MB )

OpenTune.1.7.1.MAC.part1 ( 500 MB )

OpenTune.1.7.1.MAC.part2 ( 500 MB )

Let me know in the comments how this sits in your latest project! Are you running it standalone or hooking it into your DAW via ARA2? Let’s talk shop below! 👇

VST

We’re audio producers and sound designers with over 20 years of experience in the industry. Our team has lived through the entire evolution of digital audio production.

Our mission? To filter out the junk and bring you only the studio-ready free VSTs that actually compete with paid gear. We do the digging so you can focus on creating.