ArpBud is a powerful iOS MIDI Sequencer and Arpeggiator app designed to easily create arpeggios and sequences, which are interval sequencers and pitch sequels that have unlimited steps.
All you have to do is create a sequencer project with this app, you can add, delete, copy the steps or load other sequencers from other projects and set the touch gestures on the step button.
The simple, fully-featured graphics for Sequencer and Arpeggiator make it convenient to use this app.

Some of past codes you may want to explore.

MIDITimeTableView:
https://github.com/cemolcay/MIDITimeTableView

Music theory:
https://github.com/cemolcay/MusicTheory

MIDISequencer:
https://github.com/cemolcay/MIDISequencer

Viewable guitar fretboard for iOS, tvOS and macOS with CoreGraphics.
https://github.com/cemolcay/Fretboard

Circle Fiths:
https://github.com/cemolcay/CircleOfFifths

You can see the full list of his Github repos here:
https://github.com/cemolcay?tab=repositories

The developer of this app is © Cem Olcay

App Size - 41.7 MB
Release App since - Jun 14, 2018
Update - Jul 10, 2018

• Repair MIDI settings in the project settings menu.
• Repair tempo changes on the project settings menu.

This app is paid for $ 1.99