# Quartet 2 vs Strange Loop

The clearest difference is update cadence: Strange Loop at every 4 days against Quartet 2's every 2 months. Strange Loop also leads on monetization model (free with in-app purchases vs paid) and review sentiment (100% vs 89%). Quartet 2's advantage is ratings volume (55 vs 9). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Quartet 2 sells 5 one-off in-app purchases and Strange Loop sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Strange Loop holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Quartet 2 has 55 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 89% of Quartet 2's written reviews are positive against 100% of Strange Loop's.

Quartet 2 ships an update every 2 months, Strange Loop every 4 days. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Quartet 2 | Strange Loop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (55 ratings)](https://appshunter.io/ios/app/quartet-2/id6447785150/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/strange-loop-chaos-melody/id6795408783/reviews)** |
| Number of ratings | **55** | 9 |
| Positive reviews | 88.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 613 MB | 23 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [UK Music Apps Ltd](https://appshunter.io/developer/579320222) | [Soft Brew Mobile](https://appshunter.io/developer/561703410) |

## What reviewers say

### Quartet 2

[App page](https://appshunter.io/ios/app/quartet-2/id6447785150)

Practice and perform jazz standards with live studio recordings. Mute your instrument to play along, change key, adjust tempo, and loop sections. Features animated chord diagrams and royalty-free multitrack exports for creative remixing.

**Highlights:** Live jazz standard play-alongs, Adjustable tempo and key, Looping practice sections, Animated chord diagrams, Multitrack audio export, Cross-app playlist syncing

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade song | $0.99 | one-time |
| Buy 10 tokens | $8.99 | one-time |
| Buy 20 tokens | $14.99 | one-time |
| Buy 50 tokens | $22.99 | one-time |
| Upgrade all songs | $49.99 | one-time |


### Strange Loop

[App page](https://appshunter.io/ios/app/strange-loop-chaos-melody/id6795408783)

This app generates unique melodies using chaos theory and music theory principles. Save your creations as MIDI files or use them as an AUV3 plugin. You can influence the sound by interacting directly with the visual representation of the attractors.

**Highlights:** Melody generation using Lorenz attractors, Markov policy for taste customization, Save melodies as MIDI, AUV3 plugin for instruments/MIDI processing, Interactive attractor influence via painting

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock AUV3 Plugin | $1.99 | one-time |


## Frequently asked questions

### Is Quartet 2 free?

Quartet 2 is free to download, with in-app purchases available.

### Is Strange Loop free?

Strange Loop is free to download, with in-app purchases available.

### Which has better reviews, Quartet 2 or Strange Loop?

Strange Loop is rated higher. Quartet 2 averages 4.8 out of 5 from 55 ratings, while Strange Loop averages 5.0 from 9 ratings.

### Do Quartet 2 or Strange Loop have ads?

Neither Quartet 2 nor Strange Loop shows ads.

### Which is updated more often, Quartet 2 or Strange Loop?

Quartet 2 ships an update every 2 months, and Strange Loop every 4 days. Most recently, Quartet 2 was updated on October 27, 2026 and Strange Loop on October 29, 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.*