ArpBud 2 is a MIDI Arpeggiator app where you can create unique arp patterns and be able to arpeggiate your favorite software or hardware synthesizers.

Unlike the traditional up/down style arpeggiators, you can design your unique patterns with unlimited number of steps. For each step, you can set the note interval, velocity, octave, ratchet, gate, and probability. ArpBud 2 also has a very powerful randomizer where you can randomize any step for any mode.

In a project, you can create unlimited number of patterns. For each pattern, you can assign different note rates and swing values. You can use MIDI CC messages from other apps for changing the playing pattern.

From the settings menu, you can assign a MIDI CC number for the pattern changes, the maximum number of interval numbers, randomizer settings, and knob control settings.

ArpBud 2 would react your pattern changes and step edits on the fly when you are playing it live, which makes it a great live performance tool as well as a arp design tool.

You can use it on standalone mode, IAA (Inter-App Audio) mode, Audiobus mode, AUv3 Audio Unit plugin mode. It also supports Ableton Live as well.

ArpBud 2 is a MIDI effect tool and does not produce sound on its own. It needs both MIDI input and output connections in order to work.

- Connect a MIDI source to ArpBud 2, like a MIDI keyboard, chord sequencer, or any other MIDI app to feed ArpBud 2's sequencer.
- Connect ArpBud 2 to any MIDI compatible Audio app.
- Arm the ArpBud 2's sequencer. If you are using the standalone version or Audiobus/IAA version then you can press the play button on the top right. If you are using the AUv3 plugin, then you can press the play button on your host app.

What’s New

Version 1.5.1

This version adds a new "#" button to the step add/remove section that you could set the step count immediately.

Ratings and Reviews

4.3 out of 5
6 Ratings

6 Ratings

cmruko ,

Another Bud, Another Gem

I’m a big fan of all the Bud apps by Cem Olcay. This is a really cool midi arpeggiator that works AUv3, stand-alone, and IAA. I love the Random feature and being able to set what the random will effect, and what it will not effect is a great option. It’s best for chords, so setting the interval played on each step is really cool for creating arping patterns. There’s also ratchet, octave, and probability, all of which make this a very useful tool. I would like to see a few updates like “Draw” mode, but Cem is already on top of that. He’s a great developer who is active and responsive in the AB forum. I love messing with midi and seeing what I can come up with and this app is great for that. Cheers on another Bud release. Can’t wait to see what strain, coughs, I mean Bud app, Cem will release next. Just get the Bud bundle, and the arp2, and you will not be let down.

Natemasterflex ,

Fantastic Developer!

These apps are great, and they are being upgraded almost daily. Can’t beat that. Not sure why one person gave them a 1 Star, but I’d being willing to bet it was error on their part not the app.

Po box1458 ,


Does not work in BeatMaker 3. Sounds like notes are stuck.

Developer Response ,

It's probably a BeatMaker bug, you can try to use it in standalone mode or with another host app like AUM. It would be great if you can update your rating and review, thanks!


Cem Olcay
22.6 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Turkish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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