Android · Google Play
Your music in 432 Hz.
Quantic Heartz retunes your music and video apps to 432 Hz in real time, right on your Android phone. Every note moves down by 31.77 cents. The tempo stays the same.
Get it on Google Play60 free minutes, no card needed, then a 7-day free trial.
How it works
Three steps. One tap.
- 01
Install the app
Get Quantic Heartz on Google Play and create your account.
- 02
One-time setup
About a minute: the app walks you through Android’s settings (developer options, wireless debugging, a pairing code). You can undo these settings at any time.
- 03
Tap the eye
Start your music and tap the eye: the meter glides from 440 to 432 Hz.
Your apps
Where you already listen.
Works with apps that allow it. A few apps block audio capture (Spotify at the moment, for example): they keep playing normally and the app tells you. Calls are not retuned.
Without the setup, the built-in 432 Hz player plays your own music files.
Almost all music today is tuned to an A at 440 Hz. With 432 Hz as the reference A, every note is lowered by 31.77 cents (about a third of a semitone). Tempo and length stay the same.
Not on Android right now: since early October, Spotify stops other apps from capturing the sound it plays. Spotify keeps playing normally, with no double audio. On a Mac, Quantic Heartz works with Spotify.
To retune other apps, Android requires two permissions. The app grants them to itself once through wireless debugging, which you then switch off. Nothing is recorded or sent, and you can undo these settings at any time in the app.
60 free minutes, no card needed. After that a monthly or yearly plan with a 7-day free trial, shown in your currency in Google Play. Cancel any time in Google Play.
Yes. Quantic Heartz for Mac retunes everything your Mac plays, and the iPhone app for iOS 27 is launching on the App Store. One account works everywhere.