JAX Unisonic (Audio Unit) vs pOus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JAX Unisonic (Audio Unit)
This audio unit generates up to 8 additional voices from any audio input by multiplying and shifting pitch. It simulates analog synthesizer unison effects for fattening sounds and adding presence, with individual voice transposition capabilities.
- Generates up to 8 additional voices
- Multiplies and shifts audio input pitch
- Simulates analog synthesizer unison effects
- Individual voice transposition (+/- 1 octave)
- Time domain pitch shifting (low latency)
- Panorama spread for voices
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JAX Unisonic is a special Audio Unit, able to produce up to 8 additional voices from any audio input (also polyphonic audio) by multiplying and shifting it in pitch and other parameters. Audio Units require a host application for operation. The concept of JAX Unisonic is loosely derived from ‘Unison’ which was adopted from the ancient analog synthesizer world, where manufacturers and sound designers intended to fatten the sound by multiplying and stacking available voices together. Also digital synthesizers did adopt this technique to fatten sound sources. Due to the instability of analog oscillators and components and some wilful detuning, an interesting sonic effect is achieved, giving the produced tones significantly more presence and life. Unison voices are still excessively used in modern music styles today. (In classical music compositions ‘unisono’ basically means a performance, where multiple instruments or voices play the same parts in an ensemble fashion.) Technical Now JAX Unisonic can simulate this sonic effect with any audio source by incorporating a bank of independent time domain pitch shifters, that are optimized to detune and spread artificially multiplied voices in panorama. It can be understood as a kind of super chorus generator or an ensemble like effect with variable, realtime controlled intensity and pitch relation. But it is clearly something more. With JAX Unisonic you can create up to 8 additional voices, that will be passed thru a chain of pitching and positioning, creating massively fattened sounds with any kind of voice input. Additionally you may transpose each voice individually per semitone to max. +/- 1 octave, something that cannot be achieved with usual choruses, unison or ensemble effects and moves the results slightly in the direction of the category “harmonizer” effects. Although the harmonic results can be programmed (automated) freely and are not auto generated in any way, as on some available other harmonizers. The used pitch shifters in our JAX Unisonic are NOT based on the phase vocoder paradigm (FFT) and do not introduce the static latencies, which are unavoidable by the latter. A time domain pitch shifter in contradiction, uses very small delay buffers, where the latency is dynamically adjusted (dependent on the used pitch shifting amount) and much smaller and nearly latency-free. Such pitch shifters are better situated for live usage therefore. Although, such pitch shifters sound slightly more raw and tend to produce disharmonic overtones with more extreme values. Usage JAX Unisonic may be used as a massive unison effect generator or more decently for creating various, more subtile effects for improving sonic qualities of parts in a composition. For instance controlled voice detuning, manual pitch correction, doubling of vocals or solo instruments or just to give some boring voices more interest and static sound some special movement. It is even usable with drums, adding subtile or even massive new frequency components.
pOus
This app emulates analog drum machine bass drums with adjustable tuning and decay. It offers MIDI OUT functionality for envelope follower data and a scale mode for playing musical scales. Designed for musicians using AUv3 hosts.
- BassDrum emulation
- Adjustable tune and decay
- MIDI OUT envelope follower
- Scale mode for musical notes
- AUv3 instrument
- MIDI CC routing
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Concept: The app is an AUv3 instrument that emulates the so-called “BassDrum” of analog drum machine. In addition it features MIDI OUT functionality of Envelop Follower, that is, the user can send out this instrument's unique envelop via midi CC for modulating external plugins. Also there is "scale mode" where the user can play "pOus" with musical scale like Bass. System Requirements: AUv3 host that has a flexible capability of MIDI routing (AUM, apeMatrix, etc) Usage: There are 9 sliders & one button. Tune: BassDrum’s fundamental frequency (30hz - 160hz). text-editable. Decay: determines its duration. Amp: audio’s decibel representation. MIDI OUT: whether the functionality of envelop follower is turned on or off (default: off) MIDI Gain: gain amount of MIDI out Offset: balances the output parameter’s value Channel: determines MIDI channel MIDI CC: determines the destination MIDI CC number. text-editable Scale Mode: This is a sort of Bass mode, that is, it can play musical scale in response to incoming MIDI notes. Button: triggers the instrument. Recommended Scheme: drum machine (MIDI out) -> “pOus” -> audio effect (compressor, saturator etc)
Screenshots
Verdict
The clearest difference is rating: pOus at 5.0 against JAX Unisonic (Audio Unit)'s 3.9. pOus also leads on price ($2.99 vs $9.99). JAX Unisonic (Audio Unit)'s advantage is update cadence (every 5 days vs every 4 months) and ratings volume (9 vs 1). On ads, in-app purchases, monetization model and device support 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
JAX Unisonic (Audio Unit) costs $9.99 and pOus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
pOus holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: JAX Unisonic (Audio Unit) has 9 ratings behind it against 1, so its average is the more settled of the two.
JAX Unisonic (Audio Unit) ships an update every 5 days, pOus every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | JAX Unisonic (Audio Unit) | pOus |
|---|---|---|
| Price | $9.99 | $2.99 — better |
| Rating | 3.9 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 44.4% of reviews | — |
| Number of ratings | 9 — better | 1 |
| Update frequency | Every 5 days — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 40 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Jens Guell | Satoshi Kajii |
Customer experience
JAX Unisonic (Audio Unit)
pOus
In-app purchases
JAX Unisonic (Audio Unit)
No in-app purchases
pOus
No in-app purchases
Questions
Is JAX Unisonic (Audio Unit) free?
Is pOus free?
Which has better reviews, JAX Unisonic (Audio Unit) or pOus?
Do JAX Unisonic (Audio Unit) or pOus have ads?
Which is updated more often, JAX Unisonic (Audio Unit) or pOus?
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