Guides

Practical, step-by-step help for retuning music to 432 Hz on iPhone and iPad. Every screenshot comes from the real app processing real audio files, and every chart of results is measured from the files it exported.

• Convert music to 432 Hz on iPhone and iPadThe complete walkthrough: import a song, preview it, create the 432 Hz file, and keep or export it.
• Change a song from 440 Hz to 432 HzCheck a recording’s real tuning with Auto-detect, then set the exact source and target pitch.
• Batch convert an album or folder to 432 HzQueue many files or a ZIP, auto-detect each track’s tuning, and convert them in one pass.
• Compare 432 Hz vs 440 Hz before convertingFlip between the original and a 432 Hz preview while the song plays, and decide with your ears.
• Export 432 Hz music as FLAC, ALAC, or MP3Pick the right format (MP3, AAC, ALAC, FLAC or WAV) and save it to Files or share it.
• Baroque pitch and 415 Hz recordingsWhy Auto-detect can’t tell 415 Hz from 440 Hz, and how to pick the right reading before converting.

Try it on your own music

FourThirtyTwo is a one-time purchase for iPhone and iPad. No subscription, no account, and your audio never leaves your device.

Requires iOS or iPadOS 18 or later.