528 Player Plus

SYQEL INC

In-app purchases

About this app

Tune your existing local songs to 528 Hz in real time. The Player Plus suite covers all 10 frequencies — 528 Hz, 432 Hz, and the eight other solfeggio frequencies — so you can pick exactly what you want.

Music is produced and performed at the universal concert pitch of 440 Hz. The Player Plus suite lets you retune away from that — to 432 Hz, to 528 Hz, or to any of the other solfeggio anchors. Your music, your choice, your library.

Try it free — 20 songs on us. Unlock unlimited 528 Hz retuning forever with a one-time purchase. No subscription. No monthly fees. No recurring charges. Ever.

What's included:
Your one-time unlock gives you unlimited 528 Hz retuning of your entire music library, forever. Want more frequencies? Unlock additional solfeggio frequencies individually inside the app, or get the complete bundle for all 10 frequencies at a discount.

What you can do:
- Real-time retuning of any local audio file in your library
- Switch between frequencies any time you have them unlocked
- Works fully offline — no streaming, no internet required
- Android Auto — your retuned music in your car
- Background playback — keeps playing when your screen is off
- Sleep timer
- Custom playlists, shuffle, repeat — full playback control

Frequencies in the Player Plus suite:
🎵 174 Hz
🎵 285 Hz
🎵 396 Hz
🎵 417 Hz
🎵 432 Hz
🎵 528 Hz (this app)
🎵 639 Hz
🎵 741 Hz
🎵 852 Hz
🎵 963 Hz

Why people choose 528 Player Plus:
- Real-time retuning of your existing library — your songs, not pre-converted files
- Works offline — no streaming required
- Absolute privacy — zero data collection, zero analytics, zero tracking
- No ads — never, not even later
- One-time purchase — no monthly fees, no recurring charges
- Yours forever — your 528 Hz unlock never expires

Your privacy is absolute. We collect zero data. No analytics. No third-party SDKs watching what you listen to. Your music stays yours.

Start free. Own it forever.

Download 528 Player Plus today — 20 songs free.

What’s new

Improved mobile app performance and Android auto support