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iTunes Description:

Already have a great set of IOS Synth apps but want to get some unique sounds & rhythms from them?

MidiSequencer is a step sequencer designed to let you play with melodic tunes on the fly to create exotic sounds from your favourite IOS and hardware synths.

** Reworked as Universal device (iPhone 4s,5,6,6+ and all iPads) **

Comprehensive manual available for view

With step sequencing, up to 16 midi notes can be defined and played back interactively using buttons, sliders and swipes. It therefore lends itself to more experimental style of music making as steps can have all manner of variations - pitch, velocity, length, midi channel, swing, % probability(note or velocity) and musical ornaments such as ratchetting and mordents.

With the addition of chords, each step can also send out up to 128 note chords. You can create your own chords by using a on-screen keyboard or pick common ones such as the dim7.

Midi FX are now included included echo, filters, layering and note rotation....

MidiSequencer also offers extreme tempos (from 1 to 1020BPM) and a variety of Master/Slave combinations utilising midi clocks.

1) iOS 8 or greater only so iPad 1 not suported
2) Iphone 4 upwards only
3) This app makes no sound (although it can send/receive midi to coreMidi apps you have installed on your iPad).
4) To communicate with external midi equipment you will need a suitable iPad midi interface unless you use the Midi Network sessions over wifi.
5) 64 bit compliant

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:

StepBud is a MIDI Sequencer with Audio Unit AUv3 plugin, Audiobus and Ableton Link.

Add an unlimited number of steps to your sequencer.
Your steps appear with a LED and a fader on top of your screen.
You can change the active mode that your step faders displaying/controlling.
- Set the current note or chord in range of the scale and key you selected with respect the range of the octave you want to focus,
- Set the velocity, rate, gate time, modulation, pitch bend, portamento, probability and swing for each step,
- Try increasing the rate and repeat count your steps if you want to add more flavor.
- Send unlimited custom MIDI CC messages if you want to control your hardware or software synth parameters.
- Lock steps if you don't want them to change their value.
- Skip steps for creating interesting live performances.

Below the step faders, you have a master fader where you can control your entire sequencer. It has two modes which you can change from the settings strip on the bottom of the app.
- In copy mode, it assigns its value to each step.
- In shift mode, it shifts up or down each step.

If you want to go off-scale or try some crazy chords on some of your steps, or maybe on all of them, you can go to the Step Editor by double tapping the LED of the step you want to edit.

In StepBud's powerful Step Editor, you can set your step's notes either from the virtual keyboard or your connected MIDI keyboard. Don't forget to enable MIDI in port of your MIDI keyboard or the you want to receive MIDI from the settings menu. You may also preview the selected notes by pressing the preview button in Step Editor for making sure you created the perfect sound for your particular step.

You can also toggle the steps you want to disable by tapping its LED.
If you long-press the LED, you can access a menu where you may copy/paste the steps around, remove them or edit them.

If you enable the lock mode from the settings strip on the bottom of the app, you may adjust each visible step fader on the screen by a single swipe gesture without having to lift your finger up.

Try to change your arppegio mode from the settings strip. You can sequence your steps up, down, up-down or random order.

StepBud is a MIDI sequencer app and it does not generate sounds itself. You need to route its MIDI out port in the settings menu to the audio app you want to sequence.

Please note that you need to have an iOS 11+ device and an Audio Unit host application such as AUM, apeMatrix, Cubasis, BeatMaker or Audiobus in order to use the StepBud as an Audio Unit plugin. And don't forget to route StepBud's MIDI out to the app or audio unit you want to sequence.

StepBud's MIDI layer powered by free and open-source project AudioKit

Also, StepBud offers its core components for free on GitHub. Feel free to star, fork or contribute.


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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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