Harmonizr
Matthew Robbins Music iPhoneiPadiPod touch
Harmonizr is a paid Music app for iPhone and iPad by Matthew Robbins. Rated 4.2/5 from 27 ratings. Requires iOS 18.6. Updated May 14, 2026.
- Rating
- 4.2
- 27 ratings
- Price
- 4.99 USD
- on the App Store
- Size
- 5 MB
- Age 4+
- Updated
- May 14
- 2026 · v1.9
Screenshots
About Harmonizr
Harmonizr is a vocal harmonizer offering a unique and fun user interface. Plug in a pair of headphones and sing a melody, tapping the correct key center buttons, and Harmonizr will follow, synthesizing up to three voices of automatic harmony in your own voice. Plug in a MIDI keyboard, or use the on-screen one, and you can sing harmony like Imogen Heap or Jacob Collier, matching every note you play. Harmonizr also can also be used as an Audio Unit (AUV3) extension within other apps, such as GarageBand, AUM, or Cubasis, and can be controlled by MIDI controller apps like SoundPrism.
Ratings & reviews
4.2
27 ratings
What’s new
Version 1.9 · Updated May 14, 2026
Apologies, a compiler issue caused v 1.8 to not actually harmonize. Kind of the core functionality, and I didn't catch it before distributing. Thank you for your patience!
App privacy
The developer, Matthew Robbins, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Harmonizr
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Harmonizr | 4.2 / 5 (27 ratings) | 4.99 USD | May 14, 2026 | |
| MeloVox - Vocal Harmony | 5.0 / 5 (4) | 14.99 USD | Dec 9, 2025 | Compare |
| BLEASS Voices | 4.8 / 5 (77) | 19.99 USD | Oct 2, 2026 | Compare |
| Roxsyn Guitar Synthesizer | 4.7 / 5 (90) | 19.99 USD | Nov 14, 2024 | Compare |
| BLEASS Filter | 5.0 / 5 (22) | 3.99 USD | Sep 12, 2025 | Compare |
| BLEASS Delay | 4.7 / 5 (51) | 6.99 USD | Oct 23, 2026 | Compare |
| OCTACHRON MIDI Drum Sequencer | 4.6 / 5 (106) | 9.99 USD | Mar 5, 2026 | Compare |
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