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To download Audulus from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.


By Wilson Holliday

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Audulus is a minimalist modular audio processing application. Design sound from first principles.
Limited-time price!
"beautiful interface" - Peter Kirn,
▶ Run Audulus as an Audio Unit inside other apps! ◀

With Audulus, you can build synthesizers, design new sounds, or process audio. All with low latency real-time processing suitable for live performance. Audulus's user interface is clean, simple, and easy to learn, allowing you to focus on sound.

"The biggidy bomb coolest most super tech-nerd fun times soft synth I've bought in recent times!"
- Mac App Store Australia review

"Love this App. It has one of the best UIs I've ever used."
- USA Mac App Store review

"Remarkable gesture control"

▶ Visit our forum for exciting user-created patches! ◀

▶ Key Features:

• Audio Unit hosting - use your favorite plugins
• fluid interface - smooth animated interaction
• MIDI control - use your control surface or MIDI keyboard
• presets - quickly change between settings
• unlimited history - everything you do is stored
• polyphony - process multiple voices
• encapsulation - group nodes into sub-patches
• diverse nodes - from ADSR to ZeroCross
• audio unit version - run Audulus as an Audio Unit inside other apps (free download)
• iCloud support - effortlessly sync patches between Mac and iPad

▶ Built-in Modules:

• Virtual Analog Oscillator (4 waveforms)
• ADSR Envelope
• Noise Generator
• Sample Player
• Mathematical Modules: Addition, Multiplication, Subtraction, Sine, Modulo
• Random Number Generator
• MIDI controlled Keyboard
• MIDI assignable trigger
• 16-Step Sequencer
• Delay
• Distortion
• Low Pass Filter
• High Pass Filter
• Pitch Shifter
• Constant Value
• Gain
• Mapper Curve
• Piecewise-linear Spline Curve
• Crossfade
• 4-Channel Mixer
• Level Meter
• Value Meter
• Scrolling Waveform Meter
• Input/Output
• Polyphonic to Monophonic signal mixer
• Global Time
• Sub-Patch
• Timer
• Zero-crossing Counter
• Audio Unit Plug-in

▶ In-App Purchase Upgrades (see note below):

• Custom Nodes - build your own modules!
• Math expression module -34 Math nodes in one!
• Timing mode - figure out which nodes are using the most CPU!
• Switch pack - two nodes for signal routing, more to come!
• Poly pack - Stereo and Quadraphonic processing!

▶ Recommended Hardware: Mid 2010 Mac. May not run well on older hardware. Intel GMA 950 Graphics is not supported. ◀

▶ NOTE: Mac OS 10.6.8 does not support In-App-Purchases. We recommend upgrading to 10.7 or later if possible. ◀

Please don't hesitate to contact us at audulus at audulus dot com if you have any questions or need help.

What's New in Version 2.7

■ Added auto-scrolling when making connections or moving nodes.
■ Added a new UnitDelay node (in the DSP category) which allows single-sample feedback, useful for building your own filters.
■ Reduced memory usage.
■ Added an exposable Light node (in the Metering category)
■ Zooming is now about the mouse pointer.


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Customer Reviews

Slick Design, Discoverable UI, and Great Sound

Having used many a node-based interface, I've got to hand it to Audulus for being the slickest: super clean layout, smooth and fluid navigation, and excellent visual feedback. Not only is it easy to produce great sounding synths out of the box, but modifying the components is a pleasure with a UI this nice. Don't be decieved by the simpliciy of the built-in examples and number of node options, there are a lot of powerful features in this app. One favorite of mine you might overlook is the "PolyToMono" node. When setting your synth to "Poly" mode, all of the singal flow is polyphonic so nodes like Distortion get applied per note, as opposed on the combined signal. Once this is connected to the PolyToMono node, they're explicited combined, so effects will operate on them together. Unfortunately this only works with the build in effects, and not plugins yet, but this simple UI feature gives a lot of tonal possibilities that it's hard to achieve in other Apps. Anyway, lest I make this review too geeky, let me sum it up by saying Audulus is well designed and really powerful, you can find this app as audio unit on most of my tracks!

(New comments for 1.5)
I've been trying out the new version, and am having a blast with the "Sample and Hold" node. While it has any number of uses, I've been finding it great gateway to "glitchy" sample buffer style synths. If you have an LFO or some other singal controlling the filter cutoff of your sound, try inserting a "Sample and Hold" node before the filter, driven by another LFO. That will give you a cool varying "quantization" of the filter cutoff. Stick a delay and maybe some distortion after that, and it's glitch central!

(New comments for 1.5.1)
One feature I forgot to praise was the ability to host other Audio Units inside of Audulus, which opens up an intelligent node based alternative to just the effect stack you get in most audio apps. I'm from a computer graphics background, and to me this reminds me of the huge flexibility boost I got when moving from layer based apps like After Effects to full-on node based compositors like Shake and Nuke. This is way I prefer to work by far.

(New comments for 1.5.2)
This isn't a new feature per say, but I wanted share a fun discovery I made recently: Try plugging a guitar or bass into your audio interface and wiring that input in Audulus to the sync of a square-wave osciliator, with a keyboard connected to pitch. Boom, that gives you the basics of a Moog Freqbox (~350 bucks) where the guitar/bass drives the pitch of the synth and the keyboard gives you the first formant. To keep it from self oscillating forever, try multiplying that with an envelope follower node, but I love the big tone from the simple setup. Again, props to Audulus for making this tinkering so easy!

(New comments for 2.7)
Just wanted to give another shoutout to Audulus for the big release of the iPhone version, I’ve been looking forward to this for ages! I haven’t sprung for a tablet yet, so till now, I’ve been using Audulus standalone or as an audio unit for Logic in OSX, which has been great, but being able to work on patches remotely on a iPhone is just plain awesome. I’ve been able to bust out Audulus mid discussion with my musician pals and illustrate a point on my phone, and do a lot more informal prototyping of ideas. If something really works, I can bring the patch back to OSX and use it on my compositions. Another fun new feature is the additional examples provided in the iPhone/tablet versions of 2.7 by power user Jody Golick. While I don’t personally strive to great sprawling compositions out of node networks, poking at these really help show what’s possible in Audulus. They also demonstrate just how darn optimized Audulus is, those patches are giant, and performance on my iPhone is rock solid!

View in Mac App Store
  • $14.99
  • Category: Music
  • Updated: Apr 22, 2014
  • Version: 2.7
  • Size: 15.1 MB
  • Language: English
  • Seller: Wilson Holliday

Compatibility: OS X 10.6 or later

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
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Top In-App Purchases

  1. Math Expression Node Upgrade$9.99
  2. Switch Pack$7.99
  3. Custom Nodes$9.99
  4. Poly Pack Upgrade$7.99
  5. Timing Mode$6.99