iVoxel vs Unique for iPhone
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)
Unique for iPhone
Create unique analog synth sounds with a wide sonic spectrum. Explore classic and gritty tones with versatile oscillators, filters, and built-in effects. Features a unique Vowel Filter for distinctive vocal-like textures.
- Multiple oscillator waveforms
- Analog filter types
- Vowel Filter with formant stringing
- LFO and envelope modulation
- Recordable XY field and sequencer
- Dual effect units
- Audio Unit v3 support
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“Unique sounds like syrup with dirt kicked into it. If Bootsy Collins, Roger Troutman and Daft Punk would have met up in Studio 54 to create a soft-synth, for sure something like Unique would have come out of it…” Sound & Recording Mag Unique was made for fun and vibes: Analogue sound, intense modulation and a killer set of features, delivering an amazing sonic spectrum that’s full of character: Classy sounds, powerful, warm… sometimes gritty. Each of the 2 oscillators offers a selection of 5 waveforms: sawtooth and pulse waves are here, along with noise, triple saw and triple FM waves. There's also an additional sub-oscillator strapped into the master section for added oomph. The internal controllers will bring in the dynamics: an LFO and an envelope, there's a recordable XY field & a sequencer. Use these to modulate any knob – a simple long tap will do. The sound springs to life when it hits the filter section. Needless to say, analogue high-pass, low-pass and band-pass varieties are in place, along with a comb filter. Standards aside, the actual intention behind this project, the Vowel Filter, also became its outstanding feature: string together two or four vowel formants and play them back in a multitude of ways. Once you’ve built your sound, there’s tons of sound polish in two chained multi-effect units. Features • Sawtooth, Triple Saw, Pulse, Triple FM, Noise with tonal Filter, Sub Sine • 5 Filters with 5 Modulators each • Duophone Arpeggiator • Vowel Filter • Two Effect Sections • Audio Unit v3 • Ableton Link Kit • MIDI Learn & Host Automation • 300 groovy presets by various artists
Screenshots
Verdict
The clearest difference is rating: Unique for iPhone at 3.8 against iVoxel's 3.3. Unique for iPhone also leads on update cadence (every 4 weeks vs every 5 months) and price ($4.99 vs $6.99). iVoxel's advantage is review sentiment (55% vs 44%). On ratings volume, 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 Unique for iPhone $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Unique for iPhone holds the better App Store score, 3.8 against 3.3. Both are backed by a comparable volume of ratings — 17 and 27 respectively. Written reviews complicate that: 55% of iVoxel's written reviews are positive against 44% of Unique for iPhone's, so the app with the better star average is not the one people write more warmly about.
iVoxel ships an update every 5 months, Unique for iPhone every 4 weeks. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.
| Parameter | iVoxel | Unique for iPhone |
|---|---|---|
| Price | $6.99 | $4.99 — better |
| Rating | 3.3 (17 ratings) | 3.8 (27 ratings) — better |
| Positive reviews | 54.9% of reviews — better | 44.0% of reviews |
| Number of ratings | 17 | 27 — better |
| Update frequency | Every 5 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 46 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Sugar Bytes GmbH |
Customer experience
iVoxel
Unique for iPhone
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
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- 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
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- 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
Unique for iPhone
Not enough reviews yet to summarise bugs or requests.
In-app purchases
iVoxel
No in-app purchases
Unique for iPhone
No in-app purchases









