About the Music ReTuner™ Browser Extension

Music ReTuner™ is a single browser extension that retunes the audio of YouTube, YouTube Music, Apple Music, and Spotify in real time — letting you listen to any song at 432 Hz or any Solfeggio frequency tuning.

The extension intercepts the audio stream from each supported service and applies a real-time pitch-shifting algorithm before the audio reaches your speakers — playing it back retuned to your desired frequency (e.g., 432 Hz).

Music ReTuner™ works on YouTube, YouTube Music, Apple Music, and Spotify — all from the same extension and the same license. Switch between services freely; your tuning preference follows you.

Music ReTuner™ is compatible with Google Chrome, Brave, Microsoft Edge, Mozilla Firefox (desktop & Android), and Apple Safari (Mac & iOS).

Yes — Music ReTuner™ is available as a browser extension for Safari on iOS and Firefox on Android. NOTE: it will NOT work with the native YouTube, Apple Music, or Spotify apps on your phone. To use it on mobile, open youtube.com, music.apple.com, or open.spotify.com in your mobile browser.

You can retune to all of the Solfeggio frequencies and the popular 432 Hz, plus any custom A4 target frequency you choose. The presets are: 174 Hz, 285 Hz, 396 Hz, 417 Hz, 432 Hz, 528 Hz, 639 Hz, 741 Hz, 852 Hz, 963 Hz — and a Custom A4 Hz option for any value between 200–700 Hz.

No. The tuning only applies during your session while the extension is active.

The audio is retuned by altering its playback rate. Tempo and pitch shift together, so a song retuned to 432 Hz plays slightly slower; a song retuned higher plays slightly faster. The shift is small and most listeners don't notice the speed change.

YouTube Shorts: yes, but performance may vary. YouTube Music: yes. Live streams: not currently supported due to real-time audio constraints.

Yes, but subtly. Instruments and vocals will be slightly lower (or higher) depending on the direction of tuning, yet retain their natural timbre.

No. The extension is designed to maintain lip-sync and timing between video and audio.

Visit our install page and click the button for your browser. Approve the permissions and you're ready to go.

• Refresh the page.
• Lower the audio quality temporarily.
• Disable other audio-based extensions (equalizers, boosters) that may conflict.

Make sure it's enabled in your browser's extensions panel and that the "Retuner Effect" toggle in the popup is set to ON. Play a song on a supported service, then click the extension icon to select a target frequency.

No. The tuning is done at the browser level, so any output device will receive the adjusted audio cleanly.

No. Music ReTuner™ does not track or store any personal data, browsing history or audio content.

Absolutely. It runs entirely in your browser and doesn't interact with your accounts, login state, or saved playlists on any of the supported services.

All major credit cards, PayPal Link, Apple Pay, Google Pay and Cash App.

We offer annual recurring subscriptions as well as a lifetime (one-time payment) option.

Yes. You can cancel or change the terms of your subscription at any time.

Visit our support page for a link to the Stripe customer portal where you can update payment methods, change plans, or cancel. Lemon Squeezy customers can manage their subscription from the Lemon Squeezy customer portal — also linked from support.

Yes. Both Stripe and Lemon Squeezy license keys are accepted by the extension. Just paste your key into the extension popup and click Activate.

Yes — we offer a 7-day money-back guarantee on every plan. If you're unhappy for any reason, email us within 7 days of your purchase for a full refund.

As of this time, none of the supported services use technology that would block our extension. We monitor each service and update the extension promptly if anything changes.

We do everything to comply with Google's policies so that the extension remains compliant and available in the Chrome Web Store.