AUM - Audio Mixer 4+

Connect, route, mix, record‪!‬

Kymatica AB

    • £20.99
    • Offers In-App Purchases



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. Soundfiles can be opened from anywhere, including USB drives on iOS 13 and later.

Route and filter MIDI in any way you like using the MIDI matrix. Combine and filter MIDI endpoints using MIDI buses.

Synchronize everything with the transport clock and play in time with other apps or devices using Ableton Link. 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, effect sends, signal splitting
• Supports multi-channel audio interfaces for both inputs and outputs
• Supports built-in speaker and mic, including stereo mic on devices that has it.
• Supports Audio Unit extensions, Inter-App Audio and Audiobus
• Route MIDI output from Audio Unit extensions
• Supports Audio Unit multiple output and input busses (for side-chaining etc)
• 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, with Start/Stop support
• Slave external hardware via MIDI Clock
• FilePlayer with sync and looping with access to all your soundfiles
• 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
• Optional manual compensation using TimeOffset
• Multiple Inter-App Audio / Audiobus output ports
• Built-in MIDI keyboard
• Fully MIDI controllable
• MIDI Matrix for routing MIDI anywhere
• MIDI filtering for any MIDI destination
• Combine MIDI sources or destinations using MIDI buses


• 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
• LP/HP combo filter
• First order All-pass filter
• Second order All-pass filter
• Gain
• Hard clip
• Saturation
• Lookahead peak limiter

What’s New

Version 1.4.3

- Avoid 3-finger editing menu also on iPhone.
- Fix exported UTI type for aum session files, fixes apps freezing when opening attached AUM session.
- Don't crash when renaming item in search result so that it no longer matches search text.
- Fix some menu item layout issues when rotating iPhone.
- Fix some layout glitches for MIDI CC filter matrix button.
- Add 192kHz sample rate option.

Ratings and Reviews

4.8 out of 5
124 Ratings

124 Ratings

Svetlovska ,

AUM is the landscape everything else happens in

Whatever music you make, AUM is *the* essential app for making it on IOS. Used to traditional DAWs, e.g. Cubasis, (which AUM seamlessly integrates with, btw), at first I didn't get why I needed this. But I find those DAWS more or less force you into thinking verse chorus, drum loop etc... Fine if EDM or singer songwriter is your thing but...

...These days, my hardware and PC DAW lie neglected and almost all my creation takes place inside AUM, on an IPad Air 2018. AUM's simplicity and flexibility as a host for IAA and AUv3 apps, for patching and routing audio and midi signals, and especially it's ability to record and loop in-app or external audio from anything, to pull in clips from AudioShare and even weird soft 'toy' apps like Dr. Om which are hard to use musically otherwise enable thinking outside of the box for both song structure peeps and people (like me) more comfortable with experimental, ambient flows. Match it up with Photon AU and/or Atom MIDI recorders and something like Quantum or Xequence to generate capture MIDI on the fly and you can dial up your own bespoke DAW, channel by channel, a veritable one-stop-shop studio on a tablet. Superb.

I'm just hoping for an in-AUM Cubasis style channel automation and snapshot state saving update, and then AUM will be perfect.

Fall out Dogs ,

Almost a must have.

If youre happy working entirely in cubasis or nanostudio or any other such DAW.. or maybe you just play with a synth, you might not need this. But.. if like many ios musicians you like jamming, running a few apps together, routing midi around and using various effects all at once.. you need AUM. Its a stable host, will record itself in a synced manner, it has syncable audiofile players (think long or short loops or one shots.. however you like.. also midi triggerable). It saves its session state.. its a capable production workstation with the right choice of apps. I'll sequence different synths with Drambo or Digikeys, add eq and effect each synth, use some fx busses etc. Pure Acid runs on multiple outs in this. Its the closest thing to having a hardware mixer and midi hub to connect all your virtual dynths together. The faders and other functions are midi mapable, making it automatable, but its still indispensible for me when used in a simple manner.. just maybe running a synth and a drum machine for a quick jam. It does auv3 and iaa.. its terrific.

soulwizardary ,

Never stop please

Every now and again a developer of quality creates something that changes the landscape of music making on iOS. I use it almost everyday as part of my creation chain. Having begun life recording onto tape it’s absolutely incredible to see and imagine what you can do with an app that brings it all together, and the critical part … in a way that isn’t complicated or unnecessarily technical. All to often tech people engineers like to design things that tickle their intellects and brains but really most musicians just want to focus on making music tbh and having things that are easy to use and do the job well or in this case brilliantly. Solid product and solid customer support. Both things in this maddeningly crazy time in short supply. Never stop doing this please.

App Privacy

The developer, Kymatica AB, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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