# ChaosArp vs mididelay

The clearest difference is update cadence: ChaosArp at every 2 weeks against mididelay's every 10 months. ChaosArp also leads on ratings volume (9 vs 3) and price ($3.99 vs $4.99). mididelay's advantage is review sentiment (100% vs 83%). On rating, ads, in-app purchases and monetization model there is nothing between them.

ChaosArp costs $3.99 and mididelay $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for ChaosArp against 5.0 for mididelay. Both are backed by a comparable volume of ratings — 9 and 3 respectively. Written reviews are what separate them: 83% of ChaosArp's written reviews are positive against 100% of mididelay's.

ChaosArp ships an update every 2 weeks, mididelay every 10 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ChaosArp | mididelay |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Rating | [4.9 (9 ratings)](https://appshunter.io/ios/app/chaosarp/id6497066359/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/mididelay/id6505042226/reviews)** |
| Number of ratings | **9** | 3 |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 10 months |
| Monetization | Paid | Paid |
| Size | 17 MB | 9 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Achillefs Sourlas](https://appshunter.io/developer/6813431693) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## What reviewers say

### 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


### mididelay

[App page](https://appshunter.io/ios/app/mididelay/id6505042226)

This app applies traditional delay effects to MIDI data, allowing for complex sound manipulation. It offers multiple independent delay lines, various MIDI message processing, and customizable feedback chains with built-in effects. Organize lines sequentially or in parallel for unique sonic textures.

**Highlights:** 8 independent delay lines with feedback, Processes MIDI notes, CC, aftertouch, pressure, pitch bend, Customizable feedback modes (average, min, max), Sequential and parallel delay line algorithms, Scale quantize, pitch, and velocity randomization, 3 independent scenes with cross-fading, Standalone and AUv3 support

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

**In-app purchases:** none


## Frequently asked questions

### Is ChaosArp free?

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

### Is mididelay free?

mididelay costs $4.99, with no in-app purchases.

### Which has better reviews, ChaosArp or mididelay?

mididelay is rated higher. ChaosArp averages 4.9 out of 5 from 9 ratings, while mididelay averages 5.0 from 3 ratings.

### Do ChaosArp or mididelay have ads?

Neither ChaosArp nor mididelay shows ads.

### Which is updated more often, ChaosArp or mididelay?

ChaosArp ships an update every 2 weeks, and mididelay every 10 months. Most recently, ChaosArp was updated on October 24, 2026 and mididelay on October 27, 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.*