# ShiftBud Generative MIDI AUv3 vs ChaosArp

The clearest difference is review sentiment: ChaosArp at 83% against ShiftBud Generative MIDI AUv3's 67%. ChaosArp also leads on rating (4.9 vs 4.7) and price ($3.99 vs $5.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

ShiftBud Generative MIDI AUv3 costs $5.99 and ChaosArp $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ChaosArp holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 9 and 9 respectively. Written reviews point the same way: 67% of ShiftBud Generative MIDI AUv3's written reviews are positive against 83% of ChaosArp's.

ShiftBud Generative MIDI AUv3 ships an update monthly, ChaosArp every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | ShiftBud Generative MIDI AUv3 | ChaosArp |
| --- | --- | --- |
| Price | $5.99 | **$3.99** |
| Rating | [4.7 (9 ratings)](https://appshunter.io/ios/app/shiftbud-generative-midi-auv3/id1616169031/reviews) | **[4.9 (9 ratings)](https://appshunter.io/ios/app/chaosarp/id6497066359/reviews)** |
| Number of ratings | 9 | 9 |
| Positive reviews | 66.7% of reviews | **83.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 7 MB | 17 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cem Olcay](https://appshunter.io/developer/523633853) | [Achillefs Sourlas](https://appshunter.io/developer/6813431693) |

## What reviewers say

### ShiftBud Generative MIDI AUv3

[App page](https://appshunter.io/ios/app/shiftbud-generative-midi-auv3/id1616169031)

This app generates random MIDI sequences using a shift register chip, inspired by a popular eurorack module. It offers extensive control over scales, octaves, velocity, and MIDI CC modulation, allowing for complex and evolving musical patterns.

**Highlights:** Random looping generative MIDI sequencing, 16-bit shift register logic, Adjustable chaos for sequence variation, Over 110 scales plus custom scales, MIDI CC generation and modulation, Unlimited pattern pages, Manual trigger function

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ChaosArp

[App page](https://appshunter.io/ios/app/chaosarp/id6497066359)

This music app generates complex and dynamic MIDI patterns using advanced algorithms. It offers a unique rhythm event feature and variance control for extensive customization, allowing users to create evolving musical sequences.

**Highlights:** Arpeggiator and step sequencer modes, Rhythm event feature with 13 algorithms, Pitch and rhythm variance control, Scale quantizer, Randomizable velocity and duration, 4 performance buttons

**In-app purchases:** none


## Frequently asked questions

### Is ShiftBud Generative MIDI AUv3 free?

ShiftBud Generative MIDI AUv3 costs $5.99, with no in-app purchases.

### Is ChaosArp free?

ChaosArp costs $3.99, with no in-app purchases.

### Which has better reviews, ShiftBud Generative MIDI AUv3 or ChaosArp?

ChaosArp is rated higher. ShiftBud Generative MIDI AUv3 averages 4.7 out of 5 from 9 ratings, while ChaosArp averages 4.9 from 9 ratings.

### Do ShiftBud Generative MIDI AUv3 or ChaosArp have ads?

Neither ShiftBud Generative MIDI AUv3 nor ChaosArp shows ads.

### Which is updated more often, ShiftBud Generative MIDI AUv3 or ChaosArp?

ShiftBud Generative MIDI AUv3 ships an update monthly, and ChaosArp every 2 weeks. Most recently, ShiftBud Generative MIDI AUv3 was updated on October 24, 2026 and ChaosArp on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*