# Chaos Audio vs StringKeeper

The clearest difference is in-app purchases: StringKeeper at none against Chaos Audio's 10. StringKeeper also leads on update cadence (every 2 days vs every 2 weeks). Chaos Audio's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Chaos Audio sells 10 one-off in-app purchases. StringKeeper asks for nothing beyond the download.

Chaos Audio ships an update every 2 weeks, StringKeeper every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Chaos Audio | StringKeeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (27 ratings)](https://appshunter.io/ios/app/chaos-audio/id1522790206/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 94.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 152 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chaos Audio](https://appshunter.io/developer/1522790208) | [John Carleton](https://appshunter.io/developer/1094869901) |

## What reviewers say

### Chaos Audio

[App page](https://appshunter.io/ios/app/chaos-audio/id1522790206)

This app allows users to control powerful guitar effects pedals and amp modelers, leveraging AI to create custom sounds from text descriptions. It offers a comprehensive platform for practice, recording, and performance, compatible with specific hardware.

**Highlights:** AI FX Builder for custom sound creation, Tone Shop for downloading third-party effects, Built-in tuner, 5-minute hands-free looper, Unlimited preset saving and sharing, Multi-effect chaining, Hands-free switching via Preset Control or MIDI

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JCVM Lite | $9.90 | one-time |
| Twin Classic Lite | $9.90 | one-time |
| Tweaker Lite | $9.90 | one-time |
| Poly Octave | $10.00 | one-time |
| Constellation | $14.90 | one-time |
| ORBITER | $14.90 | one-time |
| URANUS | $14.90 | one-time |
| Luna | $14.90 | one-time |
| MARINER | $14.90 | one-time |
| Daily Driver | $27.90 | one-time |


### StringKeeper

[App page](https://appshunter.io/ios/app/stringkeeper/id6763860994)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chaos Audio free?

Chaos Audio is free to download, with in-app purchases available.

### Is StringKeeper free?

StringKeeper is free to download, with no in-app purchases.

### Do Chaos Audio or StringKeeper have ads?

Neither Chaos Audio nor StringKeeper shows ads.

### Which is updated more often, Chaos Audio or StringKeeper?

Chaos Audio ships an update every 2 weeks, and StringKeeper every 2 days. Most recently, Chaos Audio was updated on November 3, 2026 and StringKeeper on November 5, 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.*