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Laplace is a physical-modeling synthesizer based on resonator synthesis that makes it easy to create bowed string, plucked string, blown pipe and metallic sounds.

New version 2.5.4
Old version 2.5.3
Release Notes * Added MIDI map range setting with enumerated parameters. * Added a function to return to the default by double tapping the MIDI map range setting screen.
Author iceWorks, Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

Music Studio offers a complete music production environment for the iPad/iPhone/iPod Touch with features and a sound quality previously only known to desktop applications and expensive audio hardware.

New version 2.11
Old version 2.10.1
Release Notes • Support for all iPhone and iPad screens • Bug fixes
Author Steinberg Media Technologies GmbH
Type Host
Supports Inter-App Audio (IAA), Audiobus

Lagrange synthesizer has two oscillators, a noise generator and two filters that can be selected from various algorithmic models.

New version 1.2.4
Old version 1.2.3
Release Notes * Added MIDI map range setting with enumerated parameters. * Added a function to return to the default by double tapping the MIDI map range setting screen.
Author iceWorks, Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

Mersenne is a melodic percussion synthesizer that combines two FM synthesis modules, a noise generator and a resonator.

New version 2.5.4
Old version 2.5.3
Release Notes * Added MIDI map range setting with enumerated parameters. * Added a function to return to the default by double tapping the MIDI map range setting screen.
Author iceWorks, Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

Rozeta is a suite of MIDI sequencers and controllers.

New version 1.3.4
Old version 1.3.3
Release Notes Fixed an issue that could cause plugins to stop functioning when using "MIDI pass through" and overloading them with MIDI input.
Author Bram Bos
Type Controller
Supports Audio Unit (AU)

Chameleon is an AUv3 compatible sampler instrument plugin for your favourite DAW.

New price $5.99
Old price $7.99
Author 4Pockets.com
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Inter-App Audio (IAA), Audio Unit (AU)

Lorentz is not only a live-oriented analog modeling synthesizer, but also has a resonator that makes metallic and aggressive sounds.

New version 2.5.4
Old version 2.5.3
Release Notes * Added MIDI map range setting with enumerated parameters. * Added a function to return to the default by double tapping the MIDI map range setting screen.
Author iceWorks, Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

Music Studio offers a complete music production environment with features and a sound quality previously only known to desktop applications and expensive audio hardware.

New version 2.11
Old version 2.10
Release Notes • 80s Retro Drum Kit • 10 additional 80s Retro Kits available as in-app purchase • Support for all iPhone and iPad screen sizes • Bug fixes
Author Steinberg Media Technologies GmbH
Type Host
Supports Inter-App Audio (IAA), Audiobus

Redshrike is a polyphonic synthesizer that combines a resonator designed to make more complicated sound creation and subtraction synthesis with an FM oscillator that creates violent distortion.

New version 2.5.4
Old version 2.5.3
Release Notes * Added MIDI map range setting with enumerated parameters. * Added a function to return to the default by double tapping the MIDI map range setting screen.
Author iceWorks, Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

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

New version 5.9
Old version 5.0.4
Release Notes iOS 14 compatibility fixes. Stay tuned for a big update coming soon!
Author Harmonicdog
Type Host
Supports Inter-App Audio (IAA), Audiobus

MIDI Mod is a set of modules designed to be used as modulation sources that send MIDI to various destinations.

New version 1.4.6
Old version 1.4.5
Release Notes All LFO's and the arpeggiator now respond to incoming MIDI transport control messages (play, stop, continue). Now you can trigger/sync any number of LFO's with an external sequencer. You can also trigger the arpeggiator when it is in latch mode, effectively turning it into a sequencer that you can start, stop, and resume with another device that sends transport messages. Just press the "TP" button to enable transport control. Be sure to set the input device in the settings first.
Author Steven Connelly
Type Tool
Supports Ableton Link

The OPL is a digital sound synthesis chip developed by Yamaha in the mid 1980s. Among other products, it was used in sound cards for PC, including the Ad Lib card and early Sound Blaster series.

New version 1.8
Old version 1.7
Release Notes AUv3 parameter exposure for host automation. iOS Universal build with iPhone support. Enhanced AUv3 GUI window display fit. AUv3 GUI scrolling using left and right border sides.
Author DiscoDSP LLC
Type Instrument
Instrument type Synth
Instrument sounds Keyboards

Castamatic is the app to listen to podcasts on any iOS device.

New version 7.0
Old version 6.0.11
Release Notes Version 7 - Add or play single episodes from a podcast without subscribing - Removed all Google Analytics and Ads libraries to prevent abusive behaviours with user's data. - New "Whats New" panel Version 6.0 New features: - Automatically skip advertising chapters, intro and outro (configurable for generic and per-podcast keywords and time). - New high performance audio engine, Airplay 2 compatible. - Improved audio effects. - Completely new CarPlay integration. Fixes and improvements: - Finer control of priority podcasts in playlists. - Improved management of onboarding panel. - Many minor bug fixes.
Author Gunp Media Productions
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Audio Unit (AU)

DOTEC-AUDIO presents DeePopMax, a big hit“Loudness Maximizer" for MacOS, now available for iOS, including AudioUnit V3 support.

Author fmfmsoft Corp.
Type Effect
Effect type Equalizer, Filter, Compressor, Limiter, Gate, Other
Supports Audio Unit (AU)

You can think of auGEN X in two ways:  first, it is a handy utility for making audio test sounds, and second, it is a performable creative sound design tool.

New version 1.1.1
Old version 1.1.0
Release Notes Version 1.1.1 (11) is a patch release to correct a few issues that crept into the last release: - Fixed a crash which occurred when running multiple instances in some Host Apps. - Fixed Host BPM Sync which accidentally got broken in the last release. - Fixed issue where MIDI Input Settings were not showing when running in Audio Unit Host Apps. We apologize for any inconvenience the previous Version 1.1 might have caused.
Author auDSPr
Type Instrument, Tool
Instrument type Synth
Instrument sounds Other
Supports Audio Unit (AU)

Kronecker is a synthesizer with a mechanism to make sounds many times like a rhythm machine each time you press a keyboard.

New version 1.5.4
Old version 1.5.3
Release Notes * Added MIDI map range setting with enumerated parameters. * Added a function to return to the default by double tapping the MIDI map range setting screen.
Author iceWorks, Inc.
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

Let the musical muses of Piano Motifs inspire your device to generate some original and beautiful motifs (short melodies).

New version 2.5
Old version 2.4
Release Notes • Added 2/4 and 6/8 Time Signatures • Refined algorithms for modal scales • Added chord progressions
Author Fernando Morales
Type Tool
Supports Ableton Link

midiSTEPs is a powerful and fun MIDI step sequencer app that sends MIDI note and CC messages to other music apps and external synthesizers.

New version 3.0.1
Old version 3.0.0
Release Notes v3.0.1 Misc bug fixes v3.0.0 MIDI AUv3 extension support added! Now you can use midiSTEPs inside an AU host such as AudioBus, AUM, Cubasis, etc Misc bug fixes
Author Arthur Kerns
Type Host, Tool
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

RE-1 is a full featured virtual Tape Machine capable of delivering authentic tape based echo and chorus effects but it doesn't stop there. With it's interactive tape player, sample, loop and overdub features it's possible to use it like a virtual tape recorder, sample player, looper or simply as a master effect.

New price $4.99
Old price $9.99
Author Kai Aras
Type Effect
Effect type Reverb, Delay, Echo, Other
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

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 price $6.99
Old price $8.99
Author 4Pockets.com
Type Instrument
Instrument type Sampler
Instrument sounds Drums, Percussion
Supports Audio Unit (AU)