Harmonizr vs BLEASS Voices
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmonizr
This app allows users to create vocal harmonies by singing along to a melody. It synthesizes up to three harmony voices in the user's own voice and can be controlled via MIDI input or used as an extension in other music production apps.
- Automatic vocal harmony synthesis
- Real-time key center selection
- MIDI keyboard integration
- On-screen MIDI keyboard
- Audio Unit (AUV3) extension support
- Control via MIDI controller apps
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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.
BLEASS Voices
This audio plugin transforms and harmonizes vocals and monophonic sources with up to 12 pitch-shifted voices. It offers independent control over pitch, formant, and placement, with MIDI and MPE support for expressive performances. Features include synth-style modulators, intelligent pitch correction, and individual voice outputs.
- 12 pitch-shifted voices
- Independent voice control
- MIDI and MPE support
- Synth-style modulators (LFOs, envelope, sequencer)
- Intelligent pitch correction
- Individual voice outputs
- Real-time mode for live performance
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BLEASS Voices is a vocal processing effect for pitching, transforming, doubling and harmonizing vocals and other sources. With 12 pitch-shifted voices and detailed control over pitch, formant, tone, width and placement, it can move from subtle vocal enhancement to dense harmonies and radical transformations. Four harmonized voices can be transposed independently by up to one octave in either direction or fixed to a chosen pitch. The remaining eight voices can be triggered via MIDI, turning incoming audio into a playable vocal instrument. MPE support brings expressive control to performance, making it possible to create vocal chords, realistic glides, trills and other pitch-based articulations directly from a compatible controller. Two LFOs, an envelope follower and a pattern sequencer add modulation and movement, extending BLEASS Voices beyond conventional harmonizing into more synth-like vocal processing. All voices can use intelligent pitch correction based on a selected key and scale. Each voice also has an independent output bus, allowing individual voices to be mixed and processed separately. BLEASS Voices works with fundamental frequencies from 66 Hz to 5.2 kHz, making it suitable not only for vocals but also for a wide range of instruments. A Real-Time mode provides the low latency required for live performance and recording. BLEASS Voices can be used as an AUv3 plugin on iPhone and iPad. BLEASS Voices is also available for Windows, macOS and Linux. More information, technical specifications and tutorials available on https://www.bleass.com/voices/
Screenshots
Verdict
The clearest difference is rating: BLEASS Voices at 4.8 against Harmonizr's 4.2. BLEASS Voices also leads on iOS requirement (15.0 vs 18.6). Harmonizr's advantage is price ($4.99 vs $9.99) and update cadence (every 4 months vs every 12 months). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Harmonizr costs $4.99 and BLEASS Voices $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BLEASS Voices holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 27 and 77 respectively. Written reviews complicate that: 74% of Harmonizr's written reviews are positive against 70% of BLEASS Voices's, so the app with the better star average is not the one people write more warmly about.
Harmonizr ships an update every 4 months, BLEASS Voices every 12 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | Harmonizr | BLEASS Voices |
|---|---|---|
| Price | $4.99 — better | $9.99 |
| Rating | 4.2 (27 ratings) | 4.8 (77 ratings) — better |
| Positive reviews | 73.9% of reviews — better | 70.0% of reviews |
| Number of ratings | 27 | 77 — better |
| Update frequency | Every 4 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Robbins | BLEASS |
Customer experience
Harmonizr
BLEASS Voices
In-app purchases
Harmonizr
No in-app purchases
BLEASS Voices
No in-app purchases
Questions
Is Harmonizr free?
Is BLEASS Voices free?
Which has better reviews, Harmonizr or BLEASS Voices?
Do Harmonizr or BLEASS Voices have ads?
Which is updated more often, Harmonizr or BLEASS Voices?
Other comparisons
