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285 Player Plus

The science

How 285 Hz retuning actually works

Honest, technical answers — including the conversion math, the A4 reference, and what we are and aren't claiming.

TODO_UNIQUE_COPY — write 400+ words. Cover the Horowitz / "Healing Codes" lineage of 285 Hz, what is claimed vs. what is empirically tested, and the A4 = 452.51 Hz reference for shifting a track so C#4 sits at 285.

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  • Free trial

    $0

    20 retunes. No card. Just open the app and try it.

  • Unlock 285 Hz

    $19.99

    One-time. 285 Hz unlocked forever on this platform. Add other frequencies later for $19.99 each.

  • Unlock all 10

    $99.99

    One-time. 285 Hz plus all 9 solfeggio tunings (174, 285, 396, 417, 528, 639, 741, 852, 963).

Prefer a direct installer? Windows .exe · Mac .dmg

Patent-protected by US Patent 11,836,330 · Built and self-funded by SYQEL INC

The other tunings

Looking for a different frequency?

We make a player for each tuning so you can pick the one that fits what you're after. Every app uses the same patent-protected real-time engine.