# Pendulums vs ARPJAM Player

The clearest difference is in-app purchases: ARPJAM Player at none against Pendulums's 1. Pendulums's advantage is ratings volume (3 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Pendulums sells 1 one-off in-app purchase. ARPJAM Player asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Pendulums against 5.0 for ARPJAM Player. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Pendulums ships an update every 4 days, ARPJAM Player every 2 days. Both last shipped on November 1, 2026.

## The numbers

| Metric | Pendulums | ARPJAM Player |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/pendulums-chaos-melody/id6803192958/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/arpjam-player/id6805495513/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 25 MB | 78 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Soft Brew Mobile](https://appshunter.io/developer/561703410) | [Takashi Tsunoda](https://appshunter.io/developer/1884742586) |

## What reviewers say

### Pendulums

[App page](https://appshunter.io/ios/app/pendulums-chaos-melody/id6803192958)

This app generates unique musical compositions based on the principles of chaos theory and physics. Users can interact with a pendulum system to influence the music's structure and mood, with no pre-recorded loops or arrangements. It offers a wide range of scales, instruments, and accompaniment styles for creative exploration.

**Highlights:** Chaos theory-driven music generation, Interactive pendulum control, Dynamic song structure based on physics, 26 diverse musical scales, 8 accompaniment styles, Multiple sampled and synthesized instruments, Exportable MIDI files

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock AUv3 | $2.99 | one-time |


### ARPJAM Player

[App page](https://appshunter.io/ios/app/arpjam-player/id6805495513)

This app lets you queue music tracks with custom playtimes, automatically fading out and transitioning to the next. It ensures consistent loudness across tracks and supports background playback with screen-off functionality. Explore a library of published tracks or import your own.

**Highlights:** Customizable track playtimes, Automatic track fading and transition, Matched loudness for consistent volume, Background playback with screen off, Browse and import JAMs, Dynamic music engine

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

**In-app purchases:** none


## Frequently asked questions

### Is Pendulums free?

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

### Is ARPJAM Player free?

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

### Which has better reviews, Pendulums or ARPJAM Player?

Pendulums and ARPJAM Player are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Pendulums or ARPJAM Player have ads?

Neither Pendulums nor ARPJAM Player shows ads.

### Which is updated more often, Pendulums or ARPJAM Player?

Pendulums ships an update every 4 days, and ARPJAM Player every 2 days. Most recently, Pendulums was updated on November 1, 2026 and ARPJAM Player on November 1, 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.*