iVoxel vs Voice Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iVoxel
This app transforms your voice into a singing machine using a powerful vocoder and synthesizer. It allows real-time voice manipulation, pitch correction, and the creation of unique vocal effects from recorded speech.
- Real-time voice analysis and resynthesis
- 20+2 Channel vocoder
- Pitch follower and automatic tuning
- Voice spectrum recorder (voxels)
- Included prerecorded voxels
- Live keyboard playback of vocoded voice
- Polyphonic synthesizer with analog waves
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iVoxel is not only an amazingly sounding vocoder - the unique concept of iVoxel turns this vocoder into a singing machine. iVoxel is a combination of a voice optimized synthesizer and a vocoder. The vocoder part is based on the Matrix vocoder from VirSyn used by many famous artists - one of them the well known german group Kraftwerk. The channel filters used by iVoxel are based on the Sennheiser Vocoder VSM201 resulting in a rich and fat analogue sound characteristic. The pitch follower and automatic tuning let you sing correct to a selectable scale. You can use iVoxel in many different ways: As a realtime vocoder talking into the microphone while playing tunes on the keyboard. The sound character of your voice can be changed in many different aspects like pitch, gender or breath noise. Use it to sing over your favorite iTunes song ! Record the analyzed spectrum of phrases and words from your own voice. Then use this voxel to play with your own voice on the keyboard or with the build in sequencer. Nearly 300 hundred prerecorded voxels are already included. iVoxel is Audiobus compatible and can be used in the Input, Filter and Output slots in the Audiobus signal chain. The carrier signal and the vocal signal can now be fed by any Audiobus compatible Apps. The output of your creations can be recorded to an audio file which you can use with other Apps and programs for further processing. Features: • Realtime analysis/resynthesis of your voice • 20+2 Channel vocoder • Pitch Follower and automatic tuning correction to selectable scale • Realtime pitch to MIDI Note converter • Voice spectrum recorder (voxels) • Nearly 300 prerecorded voxels included • Play your vocoded voice live on keyboard. Drag for slides and vibrato. • Polyphonic sequencer for notes & lyrics • Voice optimized polyphonic synthesizer with up to 64 analog waves • Time warping of voxels • Gender changer • Breath noise • Pitch vibrato with delay • Hi-end Reverb and Chorus/Delay effects • Export/Import of projects and voxels • Export of audio recordings • Upload recordings to SoundCloud • Copy audio recordings to Clipboard • Virtual MIDI and Background audio • flexible MIDI control for Gender and Vibrato • compatible to Korg/WIST standard • CoreMIDI • Audiobus 2 support (Input/Filter/Output) with state saving (requires iOS 7 or newer)
Voice Synth
Transform your voice live with a professional audio processor and music synthesizer. Create robotic voices, harmonies, and unique soundscapes using only your voice as an instrument. Save and share your creations, or integrate them into your existing audio setup.
- Live voice processing
- Auto Pitch and Harmonizing
- Vocoder effects
- Speed-Shift Sampling
- Soundscape creation
- Audio Unit V3 integration
- Save and share presets
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Voice Synth is a professional live voice processor and music synthesizer played by your voice. With the vast set of integrated tools including Vocoders, Auto Pitch, Harmonizing Pitch Shift and Speed-Shift Sampling, you can • Sing in Tune like P-Tain & vocoded like Duft-Pank • Speak with Hollywood-quality Robot voices like 1978 Cylons • Play by Voice, no fingers needed: scream to play rock guitar, hum a church organ • Make professional funny voices: animal, evil, weird & much more • Create unique organic and rhythmic soundscapes • Sing multiple voices in harmony within any musical scale • Sample, speed shift and dress up your beatboxing to create the strangest rhythms inspiring new compositions • Live-pause and stroboscope your voice • Save and share your creations as presets and audio files • Use all of the above in your DAW and audio setup via Audio Units & MIDI On Voice Synth you will find no conventional ADSR, LFOs or filters. Even the keyboard is optional. Instead, Voice Synth uses the most expressive all-in-one tool you were born with: your voice! It's unique so be ready for a jump in voice creativity, sound design and rhythmic inspiration. To give you an easy start in this adventure, we included over 250 factory presets! Speak, sing, hum and scream live into the mic, and start exploring the unconventional controls: 24-band vintage analog modeling vocoders, Auto Pitch Tracking, live-voice-pause, speed-shift sampler, multiple voice harmony arranger, spectrum stroboscope, pitch and formant shifter, 24-band equalizer, classic FX as distortion/delay/chorus/reverb, and an extensive vocoder designer with oscilloscope. We included a manual for in-depth use. Musicians, DJs, sound designers, voice artists: Voice Synth is a must-have in your audio toolbox! Qneo voicesynth.com TECHNICAL SPECS • Engine 2x32 bit 44.1 kHz poly x24 • All effects fully integrated, simultaneous, live, realtime, low-latency • Background audio (iOS) • Manual • Audio Unit V3, instrument & effect, parameter automation • Audio routing • Midi • Repeater, anti-audio-feedback • Noise gate manual/auto • Keyboard 1.5-2.5 oct (midi 10), hold/mono/poly • Tapes to record/export your performance • 250+ factory presets, unlimited user presets, import/export INTEGRATED EFFECTS • 4 vintage analog modeling vocoders 24 bands 5th order filters (Natural Robot Breath Designer) • Auto Pitch, track/fix/double/inverse pitch • Multiple Voice Harmonizer, any musical scale (choirs, rich 70's vocoder sounds) • Speed-Shift Sampler ±800%, pause/zoom/loop/hold • Live-pause & strobo voice • Pitch Shifter 8 octaves (e.g. lion/gender/child/baby/duck) • Formant Shifter adapt spectrum ±1 octave (child to giant) • Registers 4 octaves (add brilliance, chords) • Arpeggiator pattern/gate/speed/grouping • Equalizer 24 bands, 10 presets (loudness, low-pass, telecom, etc) • Autogain/Compressor, Clip/Distortion, Stereo Panning, Delay, Chorus, Reverb • Slew rate: special vocoder reverb (plucked strings, wind, thunder, storms) • Mic thru and Vocoder mix to add-in your unprocessed voice (e.g. for beat-boxing) • Sync rhythmic effect timing DESIGNER VOCODER • Realtime oscilloscope • Sine/square/triangle/sawtooth, adjustable frequency/harmonics/clip/width/skew/slope • Noise white/voiced, adjustable filter/clipping • Mix additive/maximum/multiplicative synthesis • Test mode, design/play without voice
Screenshots
Verdict
The clearest difference is rating: Voice Synth at 4.1 against iVoxel's 3.3. Voice Synth also leads on update cadence (every 6 weeks vs every 5 months) and ratings volume (333 vs 17). iVoxel's advantage is price ($6.99 vs $8.99) and iOS requirement (12.0 vs 16.6). On review sentiment, ads, in-app purchases and monetization model 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
iVoxel costs $6.99 and Voice Synth $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Voice Synth holds the better App Store score, 4.1 against 3.3. That said, the two scores are not equally well evidenced: Voice Synth has 333 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 55% of iVoxel's written reviews are positive against 62% of Voice Synth's.
iVoxel ships an update every 5 months, Voice Synth every 6 weeks. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.
| Parameter | iVoxel | Voice Synth |
|---|---|---|
| Price | $6.99 — better | $8.99 |
| Rating | 3.3 (17 ratings) | 4.1 (333 ratings) — better |
| Positive reviews | 54.9% of reviews | 62.3% of reviews — better |
| Number of ratings | 17 | 333 — better |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 46 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Qneo |
Customer experience
iVoxel
Voice Synth
User reviews
iVoxel
From 17 App Store ratingsWhat we love
- 🎵 Excellent sound quality and vocoder capabilities
- 💡 Innovative vocal sound design tool with unique spectral shaping
- 🎹 Versatile instrument for creating robot/Kraftwerk-style vocals
- 👍 Intuitive once users understand the interface
- 🎧 Works well with built-in microphone for live vocoding
Room to improve
- 🐛 Frequent crashes and stability issues across iOS versions
- ❌ Poor documentation and unclear user interface
- 🔇 Volume levels inconsistent - too quiet or too loud
- ⚠️ Unreliable audio input/output routing
- 🚫 Limited microphone compatibility and connection issues
Voice Synth
From 333 App Store ratingsWhat we love
- 🌟 Excellent sound quality
- 🎨 Powerful sound design capabilities
- 💻 Great for music production
- 🎉 Fun and creative to use
Room to improve
- 🤯 Steep learning curve
- 🤖 Robotic/synthetic voice issues
- 🔌 Compatibility problems with other apps
- 💰 Overpriced for some users
Bugs and requests
iVoxel
Reported bugs
14 issues- App crashes on launch or during use
- Hangs when changing presets or settings
- Random background noise and clicking sounds
- Microphone input not recognized or working intermittently
- No sound output in standalone or Audiobus mode
Show 9 moreShow fewer
- Touch controls unresponsive in certain screen areas
- Import/export functionality broken
- Sequencer not playing sounds or producing audio
- Recording functionality causes crashes
- Compatibility issues with iOS 18, iOS 17, and older versions
- Audiobus carrier wave option not appearing
- MIDI stuck notes and keyboard responsiveness issues
- Display rendering issues on certain devices
- Audio routing not working with external interfaces
Requested features
14 requests- AU v3 plugin support for modern DAW integration
- Audiobus 3 and IAA (Inter-App Audio) support
- Core MIDI support beyond Akai controllers
- Lightning to USB audio interface compatibility
- Custom word/text input for voice synthesis
Show 9 moreShow fewer
- Metronome for sequencer alignment
- Direct audio export and playback within app
- Improved sequencer with copy/paste/undo functionality
- Bluetooth audio output support
- Sync options for modern music production
- Better microphone input handling
- Volume normalization and better level controls
- Ability to delete recorded voxels
- More comprehensive tutorial and help system
Voice Synth
Reported bugs
3 issues- Crashes and freezes
- Audio sync issues
- Unreliable live recording
Requested features
4 requests- Audiobus support
- Longer recording duration
- More preset options
- Improved user interface and workflow
In-app purchases
iVoxel
No in-app purchases
Voice Synth
No in-app purchases









