Every format
MP3, FLAC, WAV, AAC, M4A, OGG, OPUS, and WMA, all played natively.
432 Hz - real-time tuning
Hear your music
the way it should
resonate.
Your whole local library, retuned to 432 Hz in real time by a studio-grade engine. No re-encoding, no thin metallic artifacts, no waiting. Just press play and hear it.
- Free
- No ads
- No account
- Works offline
432 HzReal-time tuning
8Audio formats supported
0Ads, ever
100%On-device, offline-first
Under the hood
An audio engine that
takes the long way around.
Shifting to 432 Hz the easy way means nudging the playback speed, and that is exactly why so much 432 Hz audio ends up sounding thin and metallic. Attune does it the hard way. It resamples every track in real time through the same class of high-quality converter you would find in mastering software. The result just sounds like your music, tuned a little warmer.
r8brain resampler, 24-bit
True sample-rate conversion, computed internally in 64-bit precision. Not a speed trick.
Native Oboe output
Low-latency audio straight to the hardware, with no sluggish middle layer in the way.
Real-time and reversible
Flip 432 Hz on or off mid-track. Your original files are never touched or re-encoded.
Every format, decoded on-device
MP3, FLAC, WAV, AAC, M4A, OGG, OPUS, and WMA, all handled natively.
Built for sound
A player that respects your music.
Atmosphere
Live blurred backgrounds
Album artwork comes alive with dynamically blurred backgrounds that adapt to every track. A calm, full-bleed now-playing screen that puts the cover art first.
Your library
Clean by design
Attune scans your device automatically and presents everything with artwork and metadata, fast and organized. No uploads, no cloud, no waiting on a network.
Make it yours
Your player, your look
Pick from a range of accent colors to match your style. Subtle, fast, and consistent across every screen, so the app feels like yours from the first tap.
Stay tidy
Filter out the noise
Auto-ignore ringtones, voice memos, and short clips by duration. Your music library stays clean without you lifting a finger, and background scanning keeps it current as files come and go.
The idea
Why 432 Hz?
Most music today is tuned to a 440 Hz reference pitch. 432 Hz is a slightly lower reference, an 8 Hz difference that many listeners describe as warmer, softer, and easier on the ears over long sessions.
A small shift, a different feel
Whether the effect is acoustic, psychological, or simply personal taste, plenty of people prefer how their music sounds at a lower reference pitch. Attune lets you decide with a single tap.
No hype, no re-encoding
Attune does not promise miracles and it never touches your original files. It retunes audio in real time, so you can compare 432 Hz and the standard tuning instantly and trust your own ears.
Hear it for yourself
440 Hz. 432 Hz. Your call.
A reference tone, played both ways. Tap to switch and listen for the difference. This runs right here in your browser, no download needed.
440Hz
Headphones recommended. The shift is subtle by design, just like it is in your music.
Everything in one player
More than a tuning toggle.
Real-time toggle
Switch between 432 Hz and standard tuning instantly, even mid-song.
Private by default
Everything stays on your device. No account, no tracking, no cloud.
Offline-first
Your whole library works without a connection. Instant, every time.
Car mode
Big, glanceable controls built for driving and hands-free use.
Live radio
Thousands of stations, retuned in real time, right inside the app.
Listening stats
See your most-played tracks and total listening time at a glance.
No ads, ever
Completely ad-free. No banners, no interruptions, no compromises.
Good to know
Frequently asked questions
Does Attune change or re-encode my music files?
No. Attune retunes audio in real time during playback. Your original files are never modified, converted, or re-encoded. Turn 432 Hz off and you hear the untouched original instantly.
Is Attune free?
Yes. Attune is free on Google Play and completely ad-free. An optional Pro upgrade unlocks extra features, but real-time 432 Hz playback of your library is free.
Which audio formats are supported?
Attune plays MP3, FLAC, WAV, AAC, M4A, OGG, OPUS, and WMA files stored on your device.
Do I need an internet connection?
No. Attune is offline-first and scans the music already on your device. You only need a connection for optional online features such as live radio.
What exactly is 432 Hz?
432 Hz is a reference pitch that is slightly lower than the modern 440 Hz standard. Attune shifts your music to this lower reference in real time so you can compare both and choose what sounds best to you.
Is 432 Hz better than 440 Hz?
Neither is objectively better. 440 Hz is the modern standard; 432 Hz is a slightly lower reference that many people find warmer and easier to listen to for long stretches. Attune lets you switch instantly so you can decide with your own ears instead of taking anyone's word for it.
Can I play my whole library in 432 Hz?
Yes. Attune retunes everything it plays, so your entire local library plays in 432 Hz when the tuning is on, with no per-track setup and no converting files in advance.
Does it work with Bluetooth headphones and speakers?
Yes. The tuning happens before the audio leaves your phone, so it works with any wired or Bluetooth headphones, earbuds, speakers, or car audio.
Does Attune collect my data?
No. Attune works entirely on your device. There is no account, no tracking, and your library never leaves your phone.
Ready to hear the difference?
Free on Google Play. No account, no ads, no catch.
Get it on
Google Play