OpenTune vs Voloco

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.

Voloco is a vocal recording app for iPhone and Android that tunes voices, adds effects, and mixes and masters tracks. Its mobile app describes more than 70 vocal effects, including pitch correction, harmonies, vocoders, and creative effects. Voloco Studio can record up to eight vocal layers, each with independent volume, pan, and effect controls. A BeatStars integration lets users browse, preview, and license beats inside the app, and the app can split imported songs into vocal and backing stems on the phone. Voloco Producer is a vocal-processing plugin for use in a DAW, with a resynthesizer, editable harmony grid, and sequencer. It requires macOS 11 on 64-bit Intel or Apple Silicon, or Windows 10 on 64-bit Intel or AMD. The site says users can export MP3 for sharing and WAV for professional mixing. The free mobile plan includes five effects. Producer Monthly costs $14.99 a month and includes a 14-day free trial; Producer Yearly costs $99.99 a year and also includes a 14-day free trial. The privacy policy says the company may collect identifiers, subscription history, voice recordings, device information, and internet activity.