Download
Live tool
Tuning clarity, no guesswork

Know the real tuning of any music track.

Streaming platforms don't validate tuning claims — anyone can label an upload "432 Hz." HZ Detect measures what's actually there. Check a track below right now, free.

Check a track now Get the desktop app
Ready HZ Detect — Web detector Free · runs in this tab · nothing is uploaded
Pitch & A4 Tuning Analyzer
Live note capture + tuning table match
--
0.00 Hz
Flat (-50)    Concert Pitch (0)    Sharp (+50)
A4 Reference ~ ... Hz
Input device
Start detection
Place your mic near the music source for the most accurate read.
Input Mic · Tab · Desktop audio Analysis On-device Detects 440 · 432 · Solfeggio
Analyze & retune your entire library with 1 click

The desktop app does this for your entire music library — every song measured, and any song retuned from its measured tuning to your target, automatically.

Download free See how it works
One detector, everywhere you listen

Which HZ Detect do you need?

★ The flagship — Mac & Windows
Your whole library, analyzed. Then retuned.

Point it at your music folders: free analysis labels every song's true tuning, and retuning converts the ones stuck at standard 440 — from their measured tuning to 432, 528, or any Solfeggio target.

Download free Explore desktop
HZ Detect desktop app analyzing a music library, each song labeled with its measured tuning
Mobile

Point your phone at whatever is playing: it names the song and measures its tuning, free. iOS & Android.

Get the mobile app
Extension

Detects while you stream — YouTube, or any app via desktop audio. Free on Chrome.

Get the extension
Web tool

The detector above — no install, instant answer through mic, tab, or desktop audio.

Open the web detector
The core problem

Uploads are labeled by users, not validated by platforms.

People upload "432 Hz" or "Solfeggio" tracks with no verification, leaving you guessing unless you measure the tuning yourself. Detect first — then trust what you heard, not what the title says.

Read how detection works
What to do next

Detect first, retune for certainty.

If the result isn't your target, retune your own file — the only guaranteed way to listen at 432 Hz or any Solfeggio frequency. The desktop app retunes from each song's measured tuning for exact results.

Retune your music
From the learning center

Browse all guides →