True Resonance

Play music in healing frequencies.

True Resonance retunes the audio stream on-the-fly to 432 Hz, 528 Hz or any custom pitch so you can enjoy music and speech at frequencies many listeners find smoother and more relaxing. Why you’ll love it 🎧 Real-time tuning – no downloads or re-encoding, just hit Play. 🔄 One-tap presets – 432 Hz, 528 Hz and ±12-semitone steps. ▶️ Now multi-platform support! - Youtube, YT music, Suno, and more! Doesn't work in Spotify yet. 🖱️ Minimal UI – clean popup, keyboard shortcuts, dark-mode friendly. 🔓 Open source & private – AGPL-3.0 code, no ads, no tracking. Perfect for musicians exploring alternate tuning, wellness fans chasing calming frequencies, or anyone who wants YouTube to sound just a bit warmer. Install, pick your frequency, and hear the difference right away!