# Strange Loop vs RollTab

The clearest difference is review sentiment: Strange Loop at 100% against RollTab's 0%. Strange Loop also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.0). RollTab's advantage is in-app purchases (none vs 1). On price, update cadence and ads there is nothing between them.

Both are free to download. Strange Loop sells 1 one-off in-app purchase. RollTab asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Strange Loop | RollTab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/strange-loop-chaos-melody/id6795408783/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 23 MB | 185 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Soft Brew Mobile](https://appshunter.io/developer/561703410) | [Simon Edwardsson](https://appshunter.io/developer/293670175) |

## What reviewers say

### 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 |


### RollTab

[App page](https://appshunter.io/ios/app/rolltab/id6799679058)

This app transforms your device into an AI-powered piano partner. It listens to your musical phrases and generates real-time continuations using an advanced on-device AI model. You can control various aspects of the AI's output and export your creations as MIDI files.

**Highlights:** AI piano accompaniment, Real-time music generation, MIDI keyboard integration, Adjustable AI parameters, Live piano-roll view, MIDI file export

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

**In-app purchases:** none


## Frequently asked questions

### Is Strange Loop free?

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

### Is RollTab free?

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

### Do Strange Loop or RollTab have ads?

Neither Strange Loop nor RollTab shows ads.

### Which is updated more often, Strange Loop or RollTab?

Strange Loop ships an update every 4 days, and RollTab every 4 days. Most recently, Strange Loop was updated on October 9, 2026 and RollTab on October 7, 2026.

---

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