StepBud - AUv3 MIDI Sequencer2.1

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
https://github.com/AudioKit/AudioKit

Also, StepBud offers its core components for free on GitHub. Feel free to star, fork or contribute.
https://github.com/cemolcay/MusicTheory
https://github.com/cemolcay/LiveFader
https://github.com/cemolcay/MIDIEventKit

Version History This version updates the AUv3 state saving. 2.1 Sep 28 This version,
- Updates the audio engine
- Updates the user interface
- Adds builtin sampler for the standalone app
- Adds iCloud based preset manager
- Adds online user manual to the settings menu
- Fixes MIDI bugs 2.0 Sep 21 This version optimizes the sequencer's sample time on higher buffer rates. 1.8 06/05/2021 This version fixes the AUv3 mode crash happening on iOS 14.2 1.7.1 11/19/2020 This version updates the UI.
Improves the draw mode sensitivity. 1.7 11/05/2020 This version fixes the Bluetooth MIDI implementation. 1.6.3 10/18/2020 This version fixes a calculation bug happening on the triplet notes. 1.6.2 09/02/2020 This version adds the new "step count (#)" button where you can specify the number of the steps you want to work with. 1.6.1 08/31/2020 Fixes the beat-sync issues happening after the rate changes while playing. 1.6.0 08/20/2020 This version 
- Updates AUv3 MIDI Channel range from [0 - 15] to [1 - 16].
- Arranges "Step Locking" buttons in settings strip under one section.
- Fixes minor UI issues. 1.5.1 01/13/2020 Huge 2020 Update!!!

This version adds new Record mode, where you can record steps directly from a MIDI source.
- Route a MIDI source as MIDI Input
- Arm the record button at the end of the step view
- Send MIDI notes or chords!
- StepBud recognizes the notes and chords in the currently selected key and scale pair.
- If the entered note/chord is not a member of the current scale, then it appears as a custom step.
- You can always edit your steps by double-tapping their LED buttons.

Ratchet Mode!!
- You can enter up to 4 ratchets for each of your steps.

MIDI Channel for AUv3 Mode!
- You can set the MIDI Channel from the MIDI menu now
- Press the MIDI button on the settings strip
- Set any MIDI Channel (0 - 15)
- StepBud will send the MIDI messages to that channel.

- Fixed "chord snapshots" bug.
- Improved step add/remove UX 1.5.0 01/07/2020 This version fixes the "transport cycle flag" bug happening on NanoStudio 2 host app. 1.4.0 12/21/2019 This version fixes a minor bug on iOS 13.
Also improves some UI components for iOS 13 support. 1.3.5 10/10/2019 This version fixes the bug regarding master fader's shift mode. 1.3.4 06/07/2019 Fixes a bug regarding snapshots where capturing swing, probability, and portamento values. 1.3.3 06/03/2019 This version adds two new toggles for "MIDI Note Input" and "Sequencing".
- You may disable the MIDI note input from MIDI settings screen for disabling "Root Note Change" feature.
- You may toggle sequencing if you have more then one AUv3 instance and don't want all of them to play.
- The sequencer will be disabled by default if are loading new instances.
- Both toggles are available as Audio Unit parameters as well.
- Fixed a bug regarding Ableton Link Play/Pause feature on Standalone version.
- Fixed a bug regarding AudioBus transport feature on Standalone version. 1.3.2 05/21/2019 Fixes a bug regarding sequencer rendering in landscape mode. 1.3.1 05/18/2019 NEW FEATURE -- Snapshots!
- This versions adds ability to capture current step configuration as a snapshot.
- You can load your snapshots at anytime while playing.
- You can use the new "Show/Hide Snapshots" button in the settings bar for showing/hiding the snapshots view. Initially, snapshots view is hidden.
- You can press the "+" button to capture current snapshot, they will appear as thumbnails in the snapshot view where you can load later by tapping them.
- They are also triggerable by MIDI CC commands!
- MIDI CC screen is updated with snapshot MIDI CC input settings.
- You can also enable/disable the MIDI CC input for snapshot triggering from this screen as well.
- Also, you can enable/disable your custom MIDI CCs, where they would not appear in mode bar while the data wouldn't be lost. 1.3 05/18/2019 This version adds "portamento sending switch" to the MIDI CC screen where you may enable/disable portamento MIDI message sending.
Hides lock and skip buttons initially. You may show/hide them with their toggle in the settings bar.
Makes default gate value 0.5 instead of 1.0.
Improves the working with chords in Step Editor. 1.2.3 05/14/2019 This version enables the sequencing in loop mode of DAWs like Cubasis 2, BeatMaker 3 and NanoStudio 2.
Fixes MIDI input/output bugs on standalone version.
Fixes rarely happening MIDI stuck bug. 1.2.2 05/08/2019 This update fixes a bug regarding multiple midi-off messages sending. 1.2.1 05/01/2019 HUGE UPDATE!
This version adds step skipping, probability and swing features.
Exopses an audio unit parameter called "Root Note" where you can change the sequencer's root note with a MIDI note.
You can connect multiple StepBud AUv3 instances each other and let them drive their root keys!

With the new "step skipping" feature where you can skip a step by toggling the new skip button, under the lock button of each step.
Also, you may show/hide lock and skip buttons by new "Show/Hide Lock Buttons" or "Show/Hide Skip Buttons" toggles on the settings bar.

You can modify the starting position of a step with the new swing mode.
Try locking every other step and use the master fader for creating easy swings.
For easier locking even/odd steps, you can use the "Lock Even Steps" or "Lock Odd Steps" buttons.
You may unlock every step with the new "Unlock All Steps" button.

Also, you can change the play probability of each step with the new probability mode.
Fixes MIDI CC sending on repeated notes.
Fixes Portamento control sending. 1.2 04/30/2019 This version adds new factory presets for AUv3 app, with 4, 8, 16, 32 or 64 blank steps.
Fixes an issue regarding preset loading bug for note rates.
Minor fixes on UI layout. 1.1.1 04/19/2019 This version adds custom MIDI CC support and individual step locking.
Also adds ability to toggling modulation and pitch bend MIDI message sending on the new MIDI CC settings screen. 1.1 04/18/2019 This version disables the continuous touches on master fader when lock mode enabled​ if step faders are controlling. 1.0.4 04/17/2019