AUM - Audio Mixer by Kymatica AB (Universal)
Released: Feb 24, 2016
Version: 1.3.9
Size: 8 MB
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Ranking - Music (iPhone)

Ranking - Music (iPad)

AUM - Audio Mixer

Kymatica AB
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.

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, effect sends, signal splitting
• 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
• 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
• Multiple 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 in version 1.3.9
- Add Control Finder: tweak an AUv3 parameter to find and show its MIDI control
- Add BT MIDI setup button in MIDI Matrix for faster access
- Improved 'instance name' editor for AUv3 plugins, now with color picker!
- MIDI controls: sort by visual node order in channel strip
- MIDI controls: Add all/assigned/unassigned view filter
- Tap plugin keyboard button to hide keyboard if already connected and visible
- AUv3: add button for quick access to parameter mappings
- Add search bar in Files menu and Import Channels view
- AUv3: don't use contextName for short instance labels etc. Developers should go back to audioUnitShortName instead.
- AUv3: update contextName with host track/slot context, like 'A1:2' etc
- FILES menu: add home-button to quickly go back to root menu
- FILES menu: Add search/filter bar

- If no AUv3 plugins found, tell user to try a reboot
- Improve size of custom view presentation on iphone in landscape
- MIDI ctrl: Improve siblings view, when MIDI msg is mapped to more than one param
- iPhone: don't use popovers for plugin params and midi routing
- MIDI controls: Make each section easier to read, and add icon
- Use in-app product view for downloadable plugins/apps
- Files menu: put Sessions and Recordings in two top-level folders
- AUv3: remove show-own-controls toggle as it's not really used by any plugin
- FILES menu: set navigation bar title to SESSIONS or RECORDINGS
- FILES menu: make it wider
- Defer system gestures for all screen edges.
- AUv3: limit plugin windows max size to screen size, since larger are not supported by iOS
- Tweak value string for AU params in milli-range
- Updated LinkKit to 3.1.3

- Work around bug that allowed all touches through when presenting presets on iphone
- Fix defer screen edge gesture
- Lots of minor tweaks and fixes
- Ignore folder in tmpdir when trying to rescue lost recordings
- Fix layout issue in Import Channels
- Filter out bad values before sending out audio, avoids rare case of plugins making audio silent until AUM is restarted
- Fix wrong touch coordinates for AU windows opened in iPhone Landscape orientation.
- Handle very long channel names, avoid hanging in infinite loop
- Make HW input nodes safer, avoiding rare potential crash
Screenshot #1 (iPhone)
Our verdict: Great!
  • + AUM - Audio Mixer is a highly rated app (4.5-star).
  • + AUM - Audio Mixer is currently ranked #12 in paid Music apps for iPad.
  • + It is also the 282nd most popular paid iPad app (all categories combined).
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