Melodyne vs OpenTune

Melodyne analyzes recordings and samples note by note, letting users adjust pitch, vibrato, volume, sibilants, note length, timing, and formants. Its four editions cover different editing needs: essential handles basic pitch and timing, assistant adds formant and dynamics editing plus audio-to-MIDI export, editor adds DNA Direct Note Access for individual notes in chords, and studio adds simultaneous editing across tracks in one window. DNA is available in editor and studio for material such as piano and guitar. Melodyne runs standalone or as a VST3, AU, or AAX plug-in, with ARA integration for compatible DAWs. Version 5 supports 64-bit macOS 10.12 or later and Windows 10 or 11; version 5.2 or later runs natively on Apple Silicon Macs. There is no free plan, but a 30-day trial offers full functions and can be used once per computer.

OpenTune is a free, open-source vocal pitch correction tool for macOS and Windows. It regenerates vocals with a neural vocoder while preserving formants, and offers hand-drawing, note, and anchor tools for pitch editing. Automatic key detection supports Chromatic, Major, Minor, Pentatonic, Dorian, Mixolydian, and Harmonic Minor scales. Per-note EQ provides another way to adjust individual notes. The software imports WAV, FLAC, OGG, and MP3 audio and is available as a standalone executable or a VST3 plugin with ARA2 support. Its AI engine combines FCPE pitch extraction with a PC-NSF HifiGAN vocoder and ONNX Runtime inference. GPU acceleration uses DirectML on Windows and CoreML on macOS. The interface supports Chinese, English, Japanese, Russian, and Spanish. OpenTune is permanently free and licensed under AGPL V3.0. On macOS, release packages use ad-hoc signing without Apple notarization, so the first launch may show a developer verification prompt.