# ChaosArp 2 — MIDI Arpeggiator Sequencer

> Chaotic MIDI arpeggiator and stepper plugin for dynamic musical pattern generation. (iPhone/iPad app by Axart Labs OU.)

- Source: https://appshunter.io/ios/app/chaosarp-2/id6753660745 (this page in markdown: same URL + `.md`)
- Developer: [Axart Labs OU](https://appshunter.io/developer/1814434331)
- Category: Music, Productivity
- Price: $5.99 (on sale, was $6.99)
- Rating: 5.00/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Released: 2025-12-31
- Data updated: 2026-08-14
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/chaosarp-2/id6753660745/reviews.md

## What is ChaosArp 2?

ChaosArp 2 is a chaotic MIDI arpeggiator/stepper plugin, capable of transforming your musical ideas into intricate, dynamic patterns with a unique twist. Using the same chaotic tricks as LoAdKer, ChaosArp 2 can modulate parameters such as pitch, rhythm, velocity, and duration, thus creating evolving, complex but high musical patterns that breathe new life into your music.

Elevate your music production today with ChaosArp 2!

Features
- Fully-featured MIDI arpeggiator with variable rate, multiple arpeggio patterns including chords, latch, and a span of up to 4 octaves
- A variable 1 to 16-step sequencer with forward/backward/ping-pong play modes, pattern presets and more
- Chaotic pitch and rhythm modulators
- Advanced editing of the rhythm modulator slots so you can create your own chaotic patterns
- Randomizable velocity and duration
- Pitch/scale quantization so that you will never play the wrong note again
- XY performance pad for real-time expressive control
- MIDI learn
- MIDI record and export

## Key features

- Chaotic MIDI arpeggiator
- Variable step sequencer
- Pitch and rhythm modulation
- Randomizable velocity and duration
- Pitch/scale quantization
- XY performance pad
- MIDI learn and export

## Chart rankings

- #185 in Top Paid · Music (US App Store)

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/chaosarp-2/id6753660745/reviews.md

### 3/5 — Decent arp, UI needs work

*2026-04-08*

As the name implies you can get some chaotic sequences from almost excellent Chaos Arp 2, but often these are the result of it not being clear which part of the sequence the controls are affecting or where you are in the UI. Controls are ambiguously named and often obscure, the different modes can lock you out of certain sections while they’re still fully visible, sometimes with no clear way to get back to the main screen. I think the best of these types of sequencers offer controlled randomness, CA2 definitely delivers on the latter but (at least for me) often leaves you wondering how you got there.

### 5/5 — Good

*2026-02-09*

I like it
Would be great if they added a midi gate probability randomizer to prune away notes based on a percentage… and an internal slow LFO to drive that.  Would be so great to have all in one device

### 5/5 — Good

*2026-01-03*

So far so good … will give a better review later

## Frequently asked questions about ChaosArp 2

### What is ChaosArp 2?

ChaosArp 2 is a chaotic MIDI arpeggiator and stepper plugin designed to create intricate and dynamic musical patterns. It uses chaotic modulation to evolve parameters like pitch, rhythm, velocity, and duration, adding unique life to your music.

### What devices does ChaosArp 2 support?

ChaosArp 2 is supported on iPhone, iPad, and iPod devices.

### How much does ChaosArp 2 cost?

ChaosArp 2 is a paid application priced at $6.99.

### Does ChaosArp 2 have ads?

No, ChaosArp 2 does not contain advertisements. It is a paid application.

### What are the main features of ChaosArp 2?

Key features include a fully-featured MIDI arpeggiator with multiple patterns, a 1 to 16-step sequencer with various play modes, chaotic pitch and rhythm modulators, and pitch/scale quantization.

### How often is ChaosArp 2 updated?

The latest version, 1.3.0, was released on March 6, 2026. Updates are generally released to improve functionality and add new features.

### What is the age rating for ChaosArp 2?

ChaosArp 2 has an age rating of 4+, making it suitable for a wide range of users.

### Can ChaosArp 2 help with playing the wrong notes?

Yes, ChaosArp 2 includes pitch/scale quantization, which ensures that the generated notes will always fit within the selected scale, preventing you from playing out-of-tune notes.

## Version history (last 5 releases)

### 1.3.1 — 2026-07-14

- Bug fixes and improvements

### 1.3.0 — 2026-03-06

- More learnable MIDI parameters, including the pitch of every sequencer step
- A virtual MIDI keyboard

### 1.2.0 — 2026-02-28

- MIDI record and export

### 1.1.0 — 2026-02-26

New arpeggiator mode: Chords!

### 1.0.2 — 2026-02-24

- Fixed an issue where the user presets would not be saved correctly
- Big fixes and improvements

## More apps by Axart Labs OU

- [LoAdKer](https://appshunter.io/ios/app/loadker/id782691053)
- [mLFO](https://appshunter.io/ios/app/mlfo/id1602306976)
- [mKer](https://appshunter.io/ios/app/mker/id1635296839)
- [ChaosArp](https://appshunter.io/ios/app/chaosarp/id6497066359)
- [Stop Music Timer](https://appshunter.io/ios/app/stop-music-timer/id6670235996)
- [Smooth Sleep](https://appshunter.io/ios/app/smooth-sleep/id6738882499)

All apps by Axart Labs OU: https://appshunter.io/developer/1814434331

## Related topics

[axart labs ou](https://appshunter.io/ios/topics/axart-labs-ou)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*