Frequently asked questions

No. Uploads are often mislabeled and platforms do not validate tuning claims. Detect first, then retune your own music for guaranteed accuracy.

Yes. The detector can measure any tuning, including all Solfeggio frequency targets such as 528 Hz, 396 Hz, and 963 Hz.

It listens to the music, samples the notes it identifies, and matches them against tuning tables to determine the reference frequency (A4) the song was tuned to. All audio is analyzed in real time on your device and never uploaded.

Yes. The web detector, browser extension, and iOS and Android apps are all free to use.

hzdetect is for detection. Retuning is handled by our tools on songretuner.com, musicretuner.com, solfeggioretuner.com, and solfeggiofrequenciestuner.com.

The extension detects tuning while music plays in-browser and can also listen to desktop audio from apps like Spotify, Apple Music, and Pandora.

Yes. The iOS and Android apps identify the song while detecting its tuning, then offer a link to hear the same song retuned to 432 Hz or 528 Hz.