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If you’re not patient enough to ride audio level manually, this AUv3 plugin saves you a lot of time.

New price $3.99
Old price $5.99
Author Pham Thang
Type Effect
Effect type Compressor, Limiter, Gate, Other
Supports Audio Unit (AU)

NuRack is an AUv3 based multi-channel audio effects processor with a difference, it actually allows you to design your own custom effects using the building blocks provided.

New version 1.41
Old version 1.40
Release Notes v1.41 Added a new Chord to MIDI module. This takes an incoming note combination and transforms into other MIDI Note/CC/PC messages. v1.40 Fixed an issue that occasionally caused a crash when launching the Spectrum Analyser.
Author 4Pockets.com
Type Effect
Effect type All-in-one
Supports Audio Unit (AU)

Enhance your bass in a mix automatically. Feel and flow your bass on live performance.

New price $3.99
Old price $5.99
Author Pham Thang
Type Effect
Effect type Bass effects
Supports Audio Unit (AU)

The music theory reference tool for musicians of all skill levels. Tonality allows you to view and listen to a large database of piano chords and scales and features a chord-recognition tool that can identify chords you play on your instrument.

New version 8.6.2
Old version 8.6.1
Release Notes Miscellaneous fixes and features: General: + New color scheme Chord/Scale AU: + Cumulative mode when identifying scales: replaces the old lock mode + Exposed automation parameter (toggle) for the lock button Guitar: + Option to always show fret numbers + Better touch interaction + Faster chart generation when using extra-permissive search criteria - Fix display of double neck marker on tres cubano - Fix bug in which “hide equivalent voicings” could hide some desired voicings in rare circumstances Chord Pads: + Pad labels can now show inversions (must be turned on in chord pad settings) - Fix bug in which chord pads would become unresponsive on some devices
Author Bryce Hostetler
Type Tool
Supports Audio Unit (AU)

iDousyn is a Mobile Instrument App with a lot of high quality sounds selected for different musical genres.

New price Free
Old price $0.99
Author Jorge Lozada
Type Instrument
Instrument type Sampler
Instrument sounds All-in-one
Supports Inter-App Audio (IAA)

DigiStix Drummer is an AUv3 compatible drum machine / sampler plugin. The program has a host of features which allow you to sample your own drumkits and trigger them either using a host application via MIDI or using the inbuilt pattern and song editor which automatically syncs tempo with your DAW.

New version 1.28
Old version 1.27
Release Notes v1.28 Fixes an issue where you could still hear very quiet audio when the mixer faders were at 0. v1.27 Added a Duplicate Drumkit option. When deleting a drumkit, DigiStix will no longer default back to the 'Default' group so long as there are other kits in the currently selected group. Other minor fixes.
Author 4Pockets.com
Type Instrument
Instrument type Sampler
Instrument sounds Drums, Percussion
Supports Audio Unit (AU)

Open up new worlds of creative music making possibilities with Audiobus, the app that lets you use your music apps together, just like virtual cables.

New version 3.4.29
Old version 3.4.28
Release Notes Fixed an issue with using multiple identical MIDI devices Fixed a crash on startup for some users
Author Audiobus Pty Ltd
Type Tool
Supports Audiobus

KQ Dixie is a 6-Operator FM synthesizer that is modeled on the synthesizer which appeared on the 1980s.

New version 2.4.5
Old version 2.4.4
Release Notes Fixed rare crashes.
Author Ryouta Kira
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audiobus, Audio Unit (AU)

The power of a digital audio workstation in the palm of your hand.

New version 6.0.6
Old version 6.0.5
Release Notes New low price! Basic MultiTrack now comes with 2 tracks and with all features enabled. If you bought MultiTrack before this version, you will of course retain your track counts and all previous purchases. Tracks can be now be purchased in multiples of 8, up to a total of 32. New midi piano keyboard controller for AudioUnit Music Devices or Instruments. With Pitchbend/modwheel sliders and scalable key widths. Automatic velocity and aftertouch on supported devices. New look, menus/controls/popups are a translucent blurred dark material. Mixdown stems as separate tracks into a folder, with normalize option. With Normalize on, tracks will be rendered as loud as possible before clipping. With normalize off, tracks will still be rendered as loud as possible before clipping, but will maintain their relative volume to other tracks. AudioUnit plugin view can be moved and resized, and remain onscreen. Supports multiple AU Instruments open at once on iPad. Extra FX bus added for a total of 2 FX busses. The large popup volume controls now have an easy to read VU Meter, and a Return To Zero dB button. AU/IAA plugins in the Effects Chain now have individual power buttons. AudioUnit icons on the tracks are now tappable, will open the Effects Chain popup for the track. Song Projects now store each of the tracks Armed state, for CoreAudio inputs, Music Devices and Instruments. Blue power dots on the Tab control to easily see which effects are on. Zipped archives can now contain multiple song projects, audio files, directories full of songs or audio files, etc. Animating play button on file player, indicates the current song position during file playback. The toolbar OUT button is now visible on screen widths of 375 points or better. Many more things. Version 6.0.6 32 bit floating point project formats! Use the '32f' option (Gear icon on the Songs Screen) to create a project with the new format. Longer song and folder names (up to 45 characters) Version 6.0.5 Replaces the 'Use Bluetooth' menu option with the standard iOS Route Picker (now in the OUT panel) FIX: Disable mute/solo/power buttons until the loading/unloading of AU chain is finished. FIX: The AU plugin icon spacing was wonky on smaller screens. FIX: Save the project even when the only change is a region rename. Version 6.0.4 Adds animating arrows on the AUView resizing button, to help clarify that the button needs to be dragged to resize the plugin. Song/Folder archiving is now cancelable during the archiving process. FIX: Better default size for AUView plugins. FIX: Progress bar is now modal. Version 6.0.3 FIX: Some weirdness with the Delay effect. Version 6.0.2 FIX: Screen layout for devices with safety margins. Version 6.0.1 FIX: A crash bug when trying to send a song as email on specific devices. FIX: A rare crash bug when retrieving the plugin name from the AVAudioUnit. FIX: The Hotbox button size and distance on iPad was a bit out of wack. FIX: Save the project even when the only changes are track renaming. FIX: Defer system gestures on bottom edge only when AudioUnit instrument or midi keyboard is onscreen.
Author Harmonicdog
Type Host
Supports Inter-App Audio (IAA), Audiobus

Real Guitar is a realistic guitar simulator apps.

New version 3.48
Old version 3.47
Release Notes - Performance and stability improvements - Bugs fixes
Author Gismart Limited
Type Instrument
Instrument type Sampler
Instrument sounds Guitar
Supports Inter-App Audio (IAA), Audiobus

RealDelayrium is a MultiDelay Audio Units PlugIn in parallel approach. It is based on 6 delay line with controls in Time, Feedback, Reson Filter, Frequency Modulation, LowPass, HighPass and Air Filter.

New version 1.4.1
Old version 1.4
Release Notes -fix bug in Audiobus
Author ANTHONY DI FURIA
Type Effect
Effect type Reverb, Delay, Echo
Supports Audio Unit (AU)

Delayrium is a MultiDelay Audio Units PlugIn in parallel approach. It is based on 6 delay line with controls in Time, Time Modulation, Feedback, Panning Modulation and Amplitude Modulation.

New version 1.4.1
Old version 1.4
Release Notes -fix bug in Audiobus
Author ANTHONY DI FURIA
Type Effect
Effect type Reverb, Delay, Echo
Supports Audio Unit (AU)

Create and save complete multi-track music projects. Record, sequence, edit, mix and render complete songs.

New version 3.5.15
Old version 3.5.11
Release Notes * Reverb - Updated with Wet/Dry balance and other controls. * Add Channel - Improved UI with Instrument categories. * Graphic EQ upgrade - Key signature tuned Graphic Equalizer. * ZIP export/import - Import/Export ZIP format projects. Import bulk samples with ZIP. * Bluetooth MIDI - Improved scan system and bugfixes. * AudioBus - Bugfixes. * Firebase - Quality assurance data (see SETTINGS).
Author Image Line Software
Type Host
Supports Audiobus

WoodSynth is a synthesizer with 4 independent layers. Each layer is in fact a synthesizer on its own.

New version 2.1
Old version 2.0.2
Release Notes - Added 31 more factory presets. - Factory presets are now stored in 5 subfolders : bass, keys, lead, pad, soundscape.
Author Woodman's Immaculate Maple Syrup Studio
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU), Ableton Link

Open up new worlds of creative music making possibilities with Audiobus, the app that lets you use your music apps together, just like virtual cables.

New version 3.4.28
Old version 3.4.27
Release Notes Fixed an issue with using multiple identical MIDI devices
Author Audiobus Pty Ltd
Type Tool
Supports Audiobus

Suggester is a tool to assist in the creation of songs and chord progressions.  This app will help you find chords that work together.

New version 12.2.2
Old version 11.2.1
Release Notes - Improved stability with the AudioUnit plugin.
Author Mathieu Routhier
Type Tool
Supports Audiobus

Flynth is a synthesizer by Fingerlab, designed for musicality and easy use.

New version 2.1
Old version 2.0.2
Release Notes This update brings major upgrade to the AudioUnit and also add new features: -AudioUnit interface scaling to fit window size -AudioUnit User Shared Presets support -AudioUnit have now a Default preset with flat values -AudioUnit presets browser embedded -AudioUnit state saving bug fix -AudioUnit multiple instance tuning bug fix -Add "Save as" option, so you can save your current preset even when it's locked -Keyboard octave range can now be changed -Add SYNC option for FX Delay -Various bugs fix Stay tuned! Fingerlab team
Author Fingerlab
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

Rhythm Pad includes a wide range of high-quality real and electronic drum kits.

New version 5.1
Old version 5.0.3
Release Notes Minor performance improvements.
Author JSplash Apps
Type Instrument
Instrument type Sampler
Instrument sounds Drums, Percussion
Supports Audiobus

Rhythm Pad includes a wide range of high-quality real and electronic drum kits.

New version 5.1
Old version 5.0.4
Release Notes Minor performance improvements.
Author JSplash Apps
Type Instrument
Instrument type Sampler
Instrument sounds Drums, Percussion
Supports Audiobus

Rozeta is a suite of MIDI sequencers and controllers.

New version 1.3.9
Old version 1.3.8
Release Notes Hopefully the final update for this elusive problem with Rozeta Scaler! (Apologies for the several updates, it was a difficult problem to track down. Thanks for reporting the issue and helping me sort it out!)
Author Bram Bos
Type Controller
Supports Audio Unit (AU)