AUM is the flexible audio mixer, recorder, and connection hub for your iPad, iPhone and iPod touch.

Connect hardware inputs and outputs, Audio Unit extensions, Inter-App Audio apps, Audiobus, soundfile players, built-in signal processing and filters, in any configuration you want.

Route anything to anywhere with mix-busses, effect sends, audiobus ports, and external multi-channel audio interfaces.

Play hosted synths and instruments using the built-in keyboard or external MIDI controllers, or sequence them with AU MIDI plugins or from other apps using Virtual MIDI.

Record mixes, individual tracks, or both, straight into the storage space of AudioShare (no copying of files needed), with synchronized start and end for perfect loops.

Play back recordings, soundfiles and loops as channel sources in the mixer for backing tracks, further processing or mixing.

Route MIDI in any way you like using the MIDI matrix.

Synchronize everything with the transport clock and play in time with other apps or devices using Ableton Link, a new technology that synchronizes beat, phase and tempo of Ableton Live and Link-enabled iOS apps over a wireless network. Connect external music machines and synchronize them with MIDI Clock.

Includes built-in processing nodes for various stereo processing, Mid/Side balance and conversion, EQs and filters, limiting, clipping and saturation. Or use any 3rd party Audio Unit extension or Inter-App Audio effect.

All controls in the mixer can be controlled via MIDI, including parameters of hosted and built-in plugins.

"A brilliant idea that has been brilliantly executed. Top-notch technical stuff and highly recommended" - MusicAppBlog

"Feature rich, powerful, intuitive, and simple to use" - DubSpot

"Executes live mixing with surprising ease, with a load of extensive features under the hood, quick snappy response on the screen and audio" - AudioNewsRoom


• High quality audio up to 32-bit 96kHz
• Clean and intuitive user interface with crisp vector graphics
• Extremely compact and optimized code, very small app size
• Unlimited number of channels
• Unlimited number of effect slots
• Inserts and sends are configurable pre/post-fader
• Internal busses for mixing or effect sends
• Supports multi-channel audio interfaces for both inputs and outputs
• Supports Audio Unit extensions, Inter-App Audio and Audiobus
• Route MIDI output from Audio Unit extensions
• Audiobus state saving
• Highly accurate transport clock
• Metronome with selectable output and optional pre-roll
• Sends host sync to Audio Unit plugins and IAA apps
• Play in time with Ableton Link
• Synchronize external hardware via MIDI Clock
• FilePlayer with sync and looping with access to all AudioShare files
• Records straight into AudioShare storage space
• Record synchronized beat-perfect loops
• Built-in nodes for stereo processing, filtering and dynamics
• Latency compensation makes everything align at the outputs
• Separate Inter-App Audio / Audiobus output ports
• Built-in MIDI keyboard
• Fully MIDI controllable
• MIDI Matrix for routing MIDI anywhere


• Stereo balance
• Stereo to mono
• Stereo panning
• Mid/Side balance
• Mid/Side - Stereo convert
• Invert Phase
• Parametric EQ
• Low-shelf filter
• High-shelf filter
• Low-pass resonant filter
• High-pass resonant filter
• First order All-pass filter
• Second order All-pass filter
• Gain
• Hard clip
• Saturation
• Lookahead peak limiter

What's New

Version 1.2.5

• Add company/name sort mode for AU plugins
• Fix keyboard settings and AU preset popups in landscape on iPhone+ models
• iPhone X layout fixes
• Suggest checking mic access if IAA node failed with error code -10851
• Don't mess up MIDI mappings if session saved after removing empty fx slot
• Improved compatibility for some multi-channel audio interfaces (RME and others)
• Keep running bypassed AU plugins, but set shouldBypassEffect to allow optimization
• Allow opening project files from other locations via Files app on iOS 11
• Various minor tweaks, optimizations, and fixes

Ratings and Reviews

4.8 out of 5

41 Ratings

41 Ratings

The definition of cool


AUM does a lot of stuff and it does it well.

I found it to be very easy to use and understand.
I prefer it over everything else for pure ease of use and speed of getting things setup and recorded. It is light weight, makes sense, and it plays nice with everything I have tried.

It isn’t a full blown recording studio with seemingly infinite cryptic controls and that’s what make it so good.
It’s light, clever, and has all the utility to get things done both quickly and with high quality.

The layout is very clean and clever. I was able to setup, record, and mix many tracks of looped samples, live synths, guitar, and drum machines without reading a manual or watching tutorials.
It takes some figuring but everything is logical.
A couple hours after I bought it I had a high quality demo recorded.

I would not enjoy making music on an iOS device without AUM and AudioShare.
So, my I am very happy with my purchase.

Thanks Kymatica!

This app is awesome.


The mixer is the best I've found and the ability to create Send channels is immensely useful. The only problem I have is that if you try to use iOS11's Screen Capture, it only records the audio from the first app you load. Everything loaded after that outputs silence.

Great job on an otherwise excellent product.

Developer Response

Thank you for the positive feedback! Regarding Screen Capture, this is how iOS 11 work and unfortunately I have no control of how Screen Capture grabs its audio. I recommend you send a bug report to Apple instead.

As close to perfect as an IOS mixer could get!


This is almost perfect! Could use a few little features like:

* Ability activate and deactivate or bypass channel fx via midi mapping.
* MORE busses. Need at least 4 more. At least I,J,K,L
* Built in ability to sidechain. Real side chaining compression, or fake ducking.


Kymatica AB
6.5 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2015 Kymatica AB


  • Family Sharing

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

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