Phase84 4+

Phase Distortion Synth - AUv3

Retronyms Inc

Designed for iPad

    • $4.99



Phase84 is now an Audio Unit! Load it into your favorite AU compatible apps, such as iMPC Pro 2 for iPad!

Phase84 is a next generation phase distortion synthesizer. It fuses gritty digital sounds with traditional analog punch.

Phase84 is a Tabletop Ready App. Combine Phase84 with drum machines, sequencers, effects, and more inside Tabletop — a free modular music app for iPad.

Phase84 is an extremely capable synthesizer and features over 110 presets, containing all sorts of basses, leads, pads, bell tones, sweeps, atmospheric sounds, pseudo-realistic tones, and more. While you don't need to know much about synthesizers to get a lot out of Phase84, experienced synth tweakers will be thrilled at the sheer variety of unique sounds that can be produced with this incredibly versatile synth.

So What's Phase84 All About?

Phase84 is what's known as a Phase Distortion synthesizer. This form of waveshaping synthesis has its roots in Casio’s brilliant CZ line of digital synthesizers from the 80s. It is designed to have the warmth of a subtractive (analog) synthesizer, yet be capable of the squelchy tones and sharp attacks of an FM synth. Phase84 in particular can create warm pads, glitchy sounds, dirty basses, filthy sweeps, screaming leads, and anything in-between.

For those familiar with the typical Moog-like (or iMini-like!) synthesis, think of the "shaper" as being synonymous with "brightness" or "filter cutoff”.

More than 100 presets.
MIDI support.
inter-App Audio support.
Advanced Keyboard section.
Expressive Perform Mode with Groove Gate.
Tabletop Ready App.
Precision Knob mode.
Phat, naturalistic unison feature for super thick pads and sweeps.
Oscillator Section: 9 Params, 2 General-Purpose Oscillators, 1 Formant Oscillator.
Mix Section: 8 Params including Delay Amount and Pulse Width.
Envelope Section: Amplitude and Shaper Envelopes. Fully visualized and interactive ADSR plus special Fade Param.
Delay/Filter Section: Stereo delay with loss modeling and a punchy overdriven analog-style filter.
3 LFOs: More flexible than your average LFO, this has 4 waveforms, optional delay and repeat count, and can go into the audible frequency range.

What’s New

Version 1.3

We hope you enjoy the newest update to Phase84! If you have any questions, please email us at If you are enjoying this update, please leave us a review :) Here’s a full list of changes.

* AudioUnit support! Use Phase84 in your favorite DAWs, sequencers, and anything else that supports the AUv3 instrument standard!
* Phase84 now runs on iPhone! It features a new interface tailored to phone-sized devices.
* Share presets! Your Phase84 sounds may now be e-mailed, messaged, AirDropped, and more.
* Lots more factory presets including risers, more aggressive bass tones, and other sounds to spice up your tracks.
* Better MIDI support! Phase84 now has Bluetooth MIDI support, a built-in MIDI monitor, and a MIDI channel selector.

Ratings and Reviews

3.8 out of 5
33 Ratings

33 Ratings

El jefy ,

Good could be great

Love the sounds you can make but after a few minutes of tweaking the audio cuts out and I have to turn my iPad off and on to bring it back. All the changes I've made to a given sound are lost.

HouseOfHomuth ,

Excellent synth with a slightly different flavor

There's a lot of criticism of Retronyms apps for some of their marketing tactics and resistance of implementing AudioBus connectivity in their apps. (Retronyms instead provides IAA support and steers you towards Tabletop, their own free but also very problematic ecosystem for housing music apps). But I actually find Phase84 to be a very nice and somewhat unique synth, especially if they continue to offer it at 4.99. Phase84 has an "FM Synth" flavor to it, but they introduce phase distortion for some gritty sounds. There's a decent wealth of presets and they are well sorted - ranging from basses to leads and stabs. The control parameters for the synth are laid out almost entirely on a single screen, which is nice. Plus, as others have noted, there are plenty of workarounds for using the synth via AudioBus (by way of AudioShare or AUM), or just recording the synth using IAA, which is pretty widely implemented nowadays.

AvengerPod ,

nice potential, frustrating bugs

So this can make some great sounds, and phase distortion + fm + filter is extremely powerful yet retro, but the bugs are painful. Can't open in tabletop. Sustain pedal doesn't work.

The user interface is also confusing and kind of a pain to use. Retronyms continues to disappoint - no audiobus?

To whoever said 'presets are uninspiring' I would suggest that you can get some great sounds out of it if you understand the underlying phase distortion + fm + subtractive synthesis engine. It is a nice digital synth that can produce anything from metallic tones to glassy to wooden to warm analog-ish to cold to fuzzy to percussive, but its main feature is channeling Casio's phase distortion synths (though with fewer envelope stages.)

App Privacy

The developer, Retronyms Inc, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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