# Trompong vs ARPJAM

The clearest difference is price: ARPJAM at Free against Trompong's $4.99. ARPJAM also leads on review sentiment (33% vs 0%) and update cadence (daily vs every 33 months). Trompong's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

ARPJAM is free to download; Trompong costs $4.99 up front. ARPJAM sells 1 one-off in-app purchase. Trompong asks for nothing beyond the download.

Trompong ships an update every 33 months, ARPJAM daily. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Trompong | ARPJAM |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/arpjam/id6762045552/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 33 months | **Daily** |
| Monetization | Paid | **Free** |
| Size | 36 MB | 7 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [emacsian Company Limited](https://appshunter.io/developer/388819355) | [Takashi Tsunoda](https://appshunter.io/developer/1884742586) |

## What reviewers say

### Trompong

[App page](https://appshunter.io/ios/app/trompong/id673710232)

Experience the authentic sounds of Balinese Gamelan Gong Kebyar with this app. It features a row of 10 gongs, offering a realistic playing experience with high-quality sampled sounds and interactive controls. Explore detailed instrument views and customizable notation displays.

**Highlights:** Authentic sampled sound bank, Realistic playing experience, Ultra-low latency audio, Zoomable instrument views, Customizable cipher notation, Ad-free experience

**Features:** Vision Pro support

**In-app purchases:** none


### ARPJAM

[App page](https://appshunter.io/ios/app/arpjam/id6762045552)

This app generates evolving ambient music using two independent arpeggio engines. It features a generative drum machine, sound design tools, and external instrument synchronization. Save and recall your favorite musical setups.

**Highlights:** Dual arpeggio engines, Generative drum machine, Sound design controls, External instrument sync (Ableton Link, MIDI Clock), Save and recall presets, Built-in timer

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Trompong free?

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

### Is ARPJAM free?

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

### Do Trompong or ARPJAM have ads?

Neither Trompong nor ARPJAM shows ads.

### Which is updated more often, Trompong or ARPJAM?

Trompong ships an update every 33 months, and ARPJAM daily. Most recently, Trompong was updated on October 3, 2026 and ARPJAM on October 4, 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.*