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417 Player Plus

417 Hz · Patent-Protected · US 11,836,330

Retune Your Music To 417 Hz

The frequency of change, momentum, and clean breaks.

Get 417 Player Plus How it works
● Free 20-song trial ● $19.99 unlocks 417 Hz ● $99.99 unlocks all 10 ● No ads, no tracking ● 14-day refund

See it work

See 417 Player Plus retune music in real time

Sixty seconds. Real-time 417 Hz retune of a song you'll recognise.

Trouble loading? Watch on YouTube

Why 417 Player Plus

Built for people who own their music — and want to hear it differently.

  • Sacral-Chakra Tone

    The second canonical solfeggio frequency — traditionally associated with the sacral chakra and the dynamics of change.

  • Movement & Momentum

    Listeners describe 417 Hz as kinetic where 396 Hz is settling — the tone you put on when something needs to shift.

  • Working & Writing

    Quietly motivating without being stimulating. Useful for working sessions where you need momentum but not adrenaline.

  • Patent-Protected Retune

    Real-time frequency conversion of your existing library, US Patent 11,836,330.

How it works

Real-time retuning. No re-encoding. No quality loss.

We don't make copies of your songs. We don't apply equalization or compression. We shift the pitch of the audio stream as it plays — and that's the entire trick.

  1. 01

    Add your music

    Point 417 Player Plus at a folder on your device — MP3, FLAC, WAV and most other common formats are supported. Your files stay where they are; nothing is uploaded.

  2. 02

    Tap to retune

    One tap and the entire library plays at 417 Hz. The original files aren't touched — the retune happens in real time on the way to your headphones.

  3. 03

    A/B as you go

    Switch back to 440 Hz any time. Compare the same song side-by-side and decide for yourself. Set a sleep timer, build playlists, listen offline.

Patent-protected. The real-time frequency-changing engine in 417 Player Plus is covered by US Patent 11,836,330 — so the option to retune your own music can't be quietly taken away from you.

Why we built 417 Player Plus

TODO_UNIQUE_COPY — write 300+ words. Angle: 417 Hz as a kinetic/change tone — distinct from 396 which is settling. Voice: SYQEL indie.

From the audience

Loved by listeners who own their music.

  • "TODO_UNIQUE_COPY"
    TODO
    iOS user
  • "TODO_UNIQUE_COPY"
    TODO
    Android user
  • "TODO_UNIQUE_COPY"
    TODO
    macOS user

Get the app

Try free. Upgrade once.

No ads. No tracking. No subscriptions. 14-day money-back guarantee on every paid tier.

  • Free trial

    $0

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

  • Unlock 417 Hz

    $19.99

    One-time. 417 Hz unlocked forever on this platform. Add other frequencies later for $19.99 each.

  • Unlock all 10

    $99.99

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

Download for App Store iPhone & iPad Download for Google Play Android Download for macOS Apple Silicon & Intel Download for Windows Windows 10 / 11

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

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

FAQ

Quick questions

What is the 417 Hz frequency used for?

TODO_UNIQUE_COPY

How is 417 Hz different from 396 Hz?

TODO_UNIQUE_COPY

Can I use 417 Hz while working?

TODO_UNIQUE_COPY

What formats does the app support?

MP3, FLAC, WAV, and other common audio formats.

Is it a one-time purchase?

Try it free for 20 retunes, then $19.99 unlocks this frequency permanently. Want all 10? $99.99 one-time. No subscriptions, ads, or tracking.

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.