Harmonizr

Paid iPhone

Plans

Plan	Billed and limits	Price
Harmonizr	One-time purchase · Up to three automatic harmony voices · iPhone and iPad	$4.99, paid once

As harmonizr.com lists them, read 14 Nov 2026. The maker's own page has the final word.

Audio integration: The app can operate as an AUv3 music-effect plugin or through Inter-App Audio. · harmonizr.com, 14 Nov 2026
Autotune: Autotune affects the user's own voice and can constrain pitches to chord, scale, or chromatic settings. · harmonizr.com, 14 Nov 2026
Creator: Matt Robbins says he created Harmonizr to experiment with real-time self-harmonization. · harmonizr.com, 14 Nov 2026
Creator location: Matt Robbins says he lives in Brooklyn, New York. · harmonizr.com, 14 Nov 2026
Harmony voices: The inversion panel lets users choose the number and inversion of automatic harmony voices. · harmonizr.com, 14 Nov 2026
Host compatibility: Harmonizr is designed for apps that host Audio Unit v3 effects. · harmonizr.com, 14 Nov 2026
Microphone permissions: Microphone access is required to stream audio for processing; the policy says audio is not retained longer than necessary to process it. · harmonizr.com, 14 Nov 2026
MIDI input: MIDI input can select key centers, manually harmonize, or do both. · harmonizr.com, 14 Nov 2026
Presets: Users can edit harmonizations and save them as presets. · harmonizr.com, 14 Nov 2026
Privacy: The privacy policy says the app uses no networking and does not collect user information. · harmonizr.com, 14 Nov 2026
What it does: Harmonizr generates up to three voices of automatic, tuned harmony from a sung melody and selected key center. · harmonizr.com, 14 Nov 2026