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StepPolyArp Unit

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iTunes Description:

"StepPolyArp Unit" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or an Audio Unit MIDI effect plug-in.

The application and the plug-in can operate as a step arpeggiator by automatically generating melodic patterns from played notes or chords, or as a step sequencer that doesn't require MIDI input to play.

Unlimited presets can be saved on a local device and synchronized to iCloud. Each preset contains 16 patterns, 5 customizable polyrhythmic step controllers, and a 32 steps event matrix with 11 polyphonic and polyrhythmic lines driving the arpeggiator engine.

The application supports full internal and external MIDI connections for input and output, Audiobus MIDI sender, MIDI filter routing, Ableton Link sync, and MIDI clock source sync. An internal sound bank is included.

The Audio Unit MIDI effect plug-in supports multiple instances. A compatible host is required to run the plug-in. The host needs to support the Audio Unit MIDI effect format.


• Standalone application and Audio Unit MIDI effect plug-in
• Arpeggiator and step sequencer mode
• 1 to 32 steps programmable matrix
• 11 configurable transposition lines
• Polyrhythmic lines
• 16 patterns by preset
• Automatic chaining patterns
• 8 octaves resizable keyboard
• Multitasking
• Sample-accurate timing
• Internal sound bank
• Tap tempo
• Receiving MIDI from external MIDI sources
• Receiving external MIDI sync (MIDI clock)
• Ableton Link support
• Internal routing of inputs, outputs, and MIDI sync
• Send MIDI to a virtual port that can be used as MIDI input by other "Core MIDI" compatible applications
• Default velocity, modulation, pan, volume, aftertouch, and pitch bend steps controller
• Customizable steps controller MIDI setup
• Arpeggiator and sequencer conform to the selected scale
• 6 arpeggiator modes
• 1 random mode
• 1 chord mode
• Random patterns creation
• Presets manager
• "Program Change" support
• Native iCloud support
• "Files" application support
• Full support of "Split View" and "Slide Over"
• 128 Undo / Redo levels
• Copy and paste
• Lockable keyboard (latch mode)

Compatible hosts supporting Audio Unit MIDI effect:

• Cubasis
• Audiobus
• BeatMaker
• apeMatrix

Supported MIDI connections:

• Virtual "Core MIDI" connections between applications
• iOS compatible MIDI interface
• MIDI over Wifi
• MIDI over Bluetooth
• Ableton Link (sync and transport)
• Audiobus (MIDI, transport, state saving)


An iPad or iPhone with iOS 11 or later



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iTunes Description:

An innovative composition tool that lets the user see and manipulate musical forms, exploring the relation between geometry and music.

APHELIAN features a new kind of sequencer, based on a geometrical metaphor. The interface is composed of 4 independent instruments, distributed in the corners. Each instrument has a SHAPE that function as a TIMELINE.

The user can DRAW EVENTS in the TIMELINE to create melodies. The SHAPES are located over a NOTE MAP that defines the NOTE of each EVENT. The SHAPES can be easily transformed using gestures that take full advantage of the touch screen.

Any transformation in the SHAPE results in a predictable modification in the musical composition. APHELIAN offers an amazing balance between joyful exploration and accurate detail control, proposing an organic way to compose music.

Inspired by Johannes Kepler’s geometrical model of the solar system, where the planets play melodies as they orbit the sun assembling a cosmic symphony.

4 orbital sequencer engines.
1 Global Harmonic controller
4 Internal Synthesizers.
1 Internal Drum machine.

SUPPORTS: Inter App Audio, Ableton Link Sync, MIDI OUT per channel (Note on/off and Control Change), Audiobus and Audiobus State

Organize/Backup your sessions and banks through the Files App

Share your sessions using the standard share menu

WARNING: Some graphic configurations of this app may potentially trigger seizures for people with photosensitive epilepsy. If you have a history of epilepsy or seizures, consult a doctor before use.


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iTunes Description:

midiSTEPs is a powerful and fun MIDI step sequencer app that sends MIDI note and CC messages to other music apps and external synthesizers. It was designed to be super easy to use in a way that's similar to the SH-101 sequencer, where you can just quickly enter a few keyboard notes and you're ready to hit play and hear your sequence. At the same time, it also incorporates many ideas from other classic and modern sequencers, allowing you to set control values per step, mute and skip existing steps, switch between multiple patterns and parts, sync and link patterns in various ways, and modify your sequences.

midiSTEPs was designed from the ground up as a touch-based iPad sequencer app, so it's super easy and intuitive to enter, edit and play sequences.

midiSTEPs features:
64 step sequencer based on the classic SH-101 sequencer
Set note, chord or rest per step
Set accent and tie per step
Set CC, velocity, length parameters per step
Mute and skip individual steps
Probability options for individual steps
Set start and end points within sequence
Edit individual steps
Transpose, loop or one shot, start and pattern sync options
Four independent sequencer parts with 16 patterns each per set
Parts can have different speeds, lengths, sync and trigger options
Pattern Mix page with clip-launcher style pattern triggering
External MIDI clock sync with clock shift adjustments and swing
Ableton Link syncing support
Audiobus 3 MIDI support
Easy to set up CoreMIDI configuration and MIDI mapping
AB3 and IAA audio output per part
Audio Unit instrument and effect hosting of external apps for easy, powerful synthesis within midiSTEPs
Easy to use touch interface designed specifically for iPad


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iTunes Description:


sequencism is a music sketchbook tool that allows the creation of short and simple pieces of music. It is designed to provide a traditional user interface of track and piano roll editors, while taking advantage of the touch-screen capabilities of the iPad. It also includes other helper tools, such as chord helper tracks.

Note that the main goal of this app is to work as a sketchbook, thus it is not recommended to use sequencism to produce complex songs or to play songs live on stage.


• Simple track mixer and visual mixer (volume, pan)
• Multitrack editor: MIDI instrument tracks, chord helper tracks
• Support for SF2* and AUv3 instruments (*lightweight SF2 files only)
• AUv3 Effects support
• AU MIDI support for instruments and effects
• Piano roll editor: add, move, copy notes within blocks
• MIDI keyboard, supports multiple scales, including user-defined scales
• Support for diatonic and chromatic chords, borrowed chords (modal interchange)
• Automatic transposing when changing chords or scales
• Supports Audiobus 3 and Ableton Link
• Support for MIDI keyboards, including Bluetooth keyboards
• Export to MIDI

Planned features

• Undo, Redo
• Automation
• Import MIDI files (improve existing support)

AUv3 instruments requires iPad Mini 2, iPad 4 or newer.
AU MIDI requires iOS 11 or newer.


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iTunes Description:

SEQ3X64 is a MIDI step sequencer, with two melodic tracks and one drums track. Each track can be from 2 to 64 steps long. Up to 16 projects can be stored in the sequencer memory, each project containing up 16 sequences on each track.

Each step on the melodic tracks has its own configuration (note number, velocity and gate length), and can be tied to next step in order to get any note length. The two melodic tracks can also be transposed in real time.

The drums track can trigger 16 different events (note number, velocity and gate length). Each step on drums track can trigger the 16 events at the same time.

The three tracks can be configured independently in terms of direction (forward, reverse, alternate) and time division (1/4, 1/8, 1/16 and 1/32). Each track can also be used in triplet mode and can have a different number of steps. Tempo can be set from 30 to 300 bpm. SEQ3X64 can be clocked internally or externally, and it can provide MIDI synchronization data to other MIDI devices as a Master.

SEQ3X64 has been specifically designed to stay compatible with older iOS versions (iOS 5.1 minimum). A nice way to recycle an older iPad...

Tutorial for the application is available here :

IMPORTANT : SEQ3X64 requires a iOS compatible MIDI interface connected to the iPad via a Camera Connection Kit (for iPads 1/2/3) or a Lightning USB cable (for iPads 4or greater, iPad Air, iPad Mini and iPad Pro)
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