Harmonizr vs VB3
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
Read full descriptionHide full description
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.
VB3
This app emulates a classic tonewheel organ, offering advanced sound modeling and effects. It includes a session recorder, audio player for backing tracks, and extensive MIDI control for live performance and production.
- Tonewheel engine and rotary simulator
- Ring Modulator and Delay effects
- Session Recorder (MIDI & WAV)
- Built-in Audio Player
- Extensive MIDI control and mapping
- Touch-friendly interface with drawbar views
Read full descriptionHide full description
Released in 2023, this is the second version of GSi's most famous product: VB3-II Tonewheel Organ emulator. This marks 20 years of research and development of this instrument. New VB3-II 2023 edition features: - Added both the tonewheel engine and the rotary simulator from VB3 v.1.4 - The V1 rotary simulator features 3 variations, for a total of 4 different amplifiers - Added 1 new tonewheel generator - Added Ring Modulator and Delay effects (pre) - Added FET Limiter (post) - Sub-Presets for Rotary effect and Digital reverb sections - Session Recorder: silently records everything is played and imports/exports standard Midi Files and renders to WAV files - Built-in Audio Player plays the most common audio formats to add a backing track to your music - Octave transposers for upper and lower separately - New Program browser shows full list with move, swap, delete functions along with import/export of banks and single Programs - Built-in function to import/export from/to VB3-II 2018 (and Crumar Mojo Desktop) Program and Bank formats - New Midi Map with reverse, latch and lock functions for each parameter - Quick Midi Learn for main screen/performance controls, normal Midi Learn for all other parameters - New advanced Midi Javascript processor for custom event transformations (supports SysEx and RPN/NRPN) - Multiple outputs (Main + Organ Only) - Separate plugin for remote Audio and Midi input - includes the exclusive VoMidiCoder - New bigger touch-friendly interface - Four different drawbar view styles - On-screen keyboards with two different viewing styles - Random program generator - Added rotary effect speed control from Channel Aftertouch - Supports Midi Output, can send whole "snapshots" when loading and when changing Programs - Supports different curves for the Swell Pedal - Built-in Midi Monitor for monitoring incoming Midi messages - Free Cloud service for sharing Programs, Midi Maps and Midi Processor Scripts with other users Features already present in the 2018 edition: - Full polyphony (61 upper + 61 lower + 25 pedals = 147 notes) - 91 modeled tonewheels with accurate phase synchronization - Adjustable leakage noise and cross modulation between tonewheels - A total of 22 different tonewheel generators to choose from - Generator shaping for a total of 154 generator combinations - Adjustable global tuning from 430 to 450 Hz - Foldback on 16" deactivatable - Complex wheels - Resistor wiring with multiple options - Realistic "run" motor wow and flutter - Busbars and 9 key contact simulation - Two separate sets of drawbars per manual - Full "inverted octave" presets - String Bass with adjustable release time - Loudness "robbing" effect - Single triggered percussion with natural capacitor discharge/recharge - Adjustable Percussion Level and Decay - Vibrato/Chorus virtual scanner - Adjustable Vibrato Scanner depth and mix - Separated Upper and Lower V/C tablets with smooth switching - Dynamic tube overdrive simulation - Spring Reverb (pre) and Digital stereo reverb (post) - Rotary speaker simulation with virtual microphone positioning, tube overdrive, tube feedback - Rotors "Front Stop" brake position with adjustable preferred position - Very low CPU consumption - Advanced MIDI Learn function with import/export of custom mappings - Upper and Lower manuals SPLIT with adjustable split point - Supports pedal sustain - Custom programmer with import/export of Programs and Banks Available for iPad as standalone App with IAA support or AUv3 plugin, compatible with all plugin hosts.
Screenshots
Verdict
The clearest difference is price: VB3 at Free against Harmonizr's $4.99. VB3 also leads on iOS requirement (12.0 vs 18.6). Harmonizr's advantage is rating (4.2 vs 3.5) and in-app purchases (none vs 2). On ratings volume 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
VB3 is free to download; Harmonizr costs $4.99 up front. VB3 sells 2 one-off in-app purchases. Harmonizr asks for nothing beyond the download.
Harmonizr holds the better App Store score, 4.2 against 3.5. Both are backed by a comparable volume of ratings — 27 and 16 respectively. Written reviews point the same way: 74% of Harmonizr's written reviews are positive against 50% of VB3's.
| Parameter | Harmonizr | VB3 |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.2 (27 ratings) — better | 3.5 (16 ratings) |
| Positive reviews | 73.9% of reviews — better | 50.0% of reviews |
| Number of ratings | 27 — better | 16 |
| Update frequency | Every 4 months | — |
| Ads | No | — |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad — better | — |
| Requires iOS | 18.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Robbins | Genuine Soundware |
Customer experience
Harmonizr
VB3
In-app purchases
Harmonizr
No in-app purchases
VB3
- Log-in to your GSi account$0.99
- Unlock All Pro Features$99.99









