Developer Taylor Holliday has released Audulus, a modular synthesis app, for the iPad. Audulus was released previously as a Mac OS X app.
With Audulus, you can build synthesizers, design new sounds, or process audio, with low latency real-time processing, suitable for live performance. Audulus’s user interface is designed to be easy to learn, allowing you to focus on sound.
Here are the details:
Key Features:
- Fluid Vector Interface – smooth animated interaction
- MIDI control – use your control surface or MIDI keyboard
- Polyphony – process multiple voices
- Diverse Nodes – from ADSR to ZeroCross
- Patch Browser – quickly flip through your patches
- 32-bit floating-point signal processing
Built-in Modules:
- Virtual Analog Oscillator (4 classic waveforms)
- ADSR Envelope
- Noise Generator
- Mathematical Modules: Addition, Multiplication, Subtraction, Sine, Modulo
- Random Number Generator
- MIDI controlled Keyboard
- MIDI assignable trigger
- Delay
- Distortion
- Low Pass Filter
- High Pass Filter
- Pitch Shifter
- Constant Value
- Gain
- Mapper Curve
- Piecewise-linear Spline Curve
- Sample and Hold
- 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
Planned:
- Presets – quickly change between patch configurations
- Unlimited History – every undo is stored in the file
- Encapsulation – group nodes into sub-patches
- Audio Copy / Paste
- Audiobus support
- iCloud support
Audulus is $9.99 in the App Store.
If you’ve tried Audulus, let us know what you think of it.


From time to time I leave my iPad at home… today is one of those days…
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No iPhone!!!?!?!? :’( I was so looking forward to this!!! :’(
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I might do an iPhone version at some point. It will take some re-working of the UI to fit on the iPhone screen, but its totally doable
cheers
- Taylor (Audulus Developer)
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There’s always Jasuto to play with until an iPhone version comes out
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Just curious, but why is iOS6 required? That kills us first gen iPad owners. I get that it’s an older OS but there are supported apps that have a lot more going on, is there no work around for buffer issues? But on the other side of that I will be eagerly awaiting an iPhone version, as long as my 4s can handle it…
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I used one feature from iOS 6 which cut my development time significantly (it helped me build the patch browser quickly). I might re-implement that feature myself for iOS 5 compatibility, but no guarantees. I’m also concerned about performance on iPad 1. In particular, Audulus uses the GPU a lot more than most synths.
cheers
- Taylor
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Aw, crap. I wish I had read that before I bought it! Oh well, great to see the app on the platform, none the less.
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Whoa, the App Store will allow you to buy something for iOS 6 when you don’t have iOS 6 without so much as a warning? That’s nuts! I put up a disclaimer.
- Taylor
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If one tries to buy an unsupported app from their iPhone or iPad it won’t allow it. Buying from iTunes does not have the same restriction. It will let you buy any app regardless of what devices you may own. (And really, that’s how it should work)
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Not a big deal, it’s totally worth supporting this app, and I’ll be upgrading soon enough.
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I’d buy it if it were compatible with iPad 1.
My original iPad is still going strong.
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So totally excited for this. Amazing work Tyler!!
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So cool! Great to see this on iPad.
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Bought. No clue when I’m going to have time to play with it, but I support this kind of thing!
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Amazing app, I bought it, love it (mini Reactor!!) left glowing 5star feedback on App Store, don’t do that very often!
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Looks fun! Going to grab this as soon as I move over to my iPad for the evening.
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Totally awesome! This is a new level of power and control of a synth on the iPad. So many possibilities
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This app has matured well on the Mac so it’s great to finally see it on the iPad it’s almost exactly the same on the iPad and you can share patches between the two. It works well, sounds great, and has a much more straight forward interface than Jasuto. Once Taylor gets Audiobus and copy/paste added this will be killer.
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Fantastic UI – looks like the future!
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