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Cube Synth is a groundbreaking new software instrument giving you the power and flexibility of additive synthesis together with easy editing and morphing capabilities. Macro parameters allow you to control this beast with unequalled ease.

Intelligent sound morphing capabilities enables you to easily create complex evolving sound scapes, vocal phrases or stunning rhythms simply by choosing up to four sound sources from a predefined set. Then add one of the predefined envelopes and a unique, complex sound preset containing thousands of parameters is created! If you want to dive deeper into the inner secrets of this synthesis monster you can manipulate each parameter individually to get precise control over the sound. A number of high level parameters such as Brightness and Harmonic spread control hundreds of synthesis parameters in a way modeled after the inner workings of natural instruments.
Cube Synth gives you also a new method of getting randomly generated sound patches in a way you never experienced before: roll the dice! Every single try gives you a new unique sound patch, really every try, promised…


• over 400 sound presets
• four morphable sound sources
• up to 512 partials per voice
• harmonic/inharmonic spectra
• arbitrary noise spectra
• morphable filter banks
• 3 Envelopes with tempo sync
• 64 time/level segments per envelope


• Uses programmable sequences with up to 32 steps. 
• Can trigger single notes and chords.
• Unique randomizer generates Arpeggios with 100% usability.
• 32 Arpeggios included, unlimited useer arpeggios possible.
• For each step you can program tie, accent, transposition and note order


• Chorus
• Phaser
• Overdrive
• Ensemble
• Echo/Delay
• Reverb


• Audiobus 2 compatible (Input slot) with state saving
• Support for Ableton Link.
• Inter-app audio compatible (Instrument/Generator)
• CoreMIDI / Virtual MIDI
• Audio recorder with Metronome.
• Upload to SoundCloud and File Export.
• Audio pasteboard.

What’s New

Version 1.5.2

- MIDI port name bug fixed
- Bluetooth A2DP added

Ratings and Reviews

4.6 out of 5
9 Ratings

9 Ratings

mrdogheadSHoGoAT ,

Monster synth

This is not the kind of instrument one buys for presets. There are outstanding presets included with Cube Synth and not-so-great presets. It is a rare synth that includes only presets that every musician finds agreeable. Cube is complex compared to virtual-analogue and wavetable synthesizers, but its value lies neither in immediacy nor as a source of ready-made sounds. It does not work the way other types of synthesizers do, which leads directly to its relative unfamiliarity. Happily, VirSyn has simplified this instance of additive synthesis sufficiently to diminish the learning curve while giving users broad access to sound-design and, as a bonus, rhythmical power we don’t often get in synths on this operating system.

The core of the synth is the four-part additive engine, which includes not only access to the amplitudes and frequencies of the sine waves in each part that build the waves that build the sound (with control access getting less granular as one goes further up the partial set), but to spectrum filtration and noise shaping as well. There is a lot of math hidden, giving the user visual, touch control of a great deal of detail in an easy way.

Ease is relative, of course. The manual will help users unfamiliar with this sort of synth - beginners would do well to go over it.

The other special thing is the multilayered, multisegment envelope system. Be sure to notice the X and Y envelopes and to what modulations they can be connected for added utility.

There is much more to explore as well.

I hope VirSyn maintains Cube. Speaking of the envelopes, it could use a ready tool to sync segment points - per segment, as an option, when the envelopes are not fully synchronized to the BPM rhythm. It would add a welcome bit of ease of use to the free envelope mode without being to big of a project.

It might also be good to back-port the newer, four-part arpeggiator/sequencer to the Cube, possibly even exposing the A through D sound sources to be connected to it as well as the postprocessed and enveloped sound.

Even without such things, I find Cube Synth remains one of the best apps on this OS. I continue to find new ways to use it.

HouseOfHomuth ,

Another entry in VirSyn's must-own lineup

I will readily confess that I own far more synth apps than I realistically need or use. But if I were tasked with actually picking a synth or two to actually create some music, Cube Synth (or any of the VirSyn synths) would be an excellent choice.

Cube Synth may actually be my least favorite of the (now) 4 VirSyn products, but it's still easily a 5-star product. The great thing about VirSyn apps is that they are friendly to the most obsessive sound designers ever, or somebody completely ignorant (or trying to learn) that wants huge libraries of varied sounds without having to make them from scratch. I'm probably more in the latter camp :)

The sounds in Cube Synth are rich and powerful. Aboslutely love the "dice" button which randomizes synthesis settings and creates a brand new preset on the spot (which you can save if you like it). How cool is that? The master effects suite is top-notch, and best of all the VirSyn apps take up virtually no storage space and work with everything. You'll regret some of your app purchases, but not this one.

ZenLizard ,

First Impression - Nice!

Presets are much more organic than your standard subtractive. I find this one a bit cumbersome to program and it is difficult to develop patches that don't have that additive "buzzy" sound to them, but I'm giving five stars based on the fact that the envelope control is outstanding and totally innovative. Also, the arpeggiator, like the one in Addictive Synth, is especially nice.


VirSyn Software Synthesizer
24.3 MB

Requires iOS 8.0 or later. Compatible with iPad.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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