# ARPJAM Studio vs 4trMTR

The clearest difference is price: 4trMTR at $0.99 against ARPJAM Studio's $12.99. ARPJAM Studio's advantage is update cadence (every 2 days vs every 3 weeks) and device support (4 vs 2). On review sentiment, ads and in-app purchases there is nothing between them.

ARPJAM Studio costs $12.99 and 4trMTR $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ARPJAM Studio ships an update every 2 days, 4trMTR every 3 weeks. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ARPJAM Studio | 4trMTR |
| --- | --- | --- |
| Price | $12.99 | **$0.99** |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/arpjam-studio/id6775859535/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Paid | **Free** |
| Size | 84 MB | 12 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Tsunoda](https://appshunter.io/developer/1884742586) | [YUKIO TOKIWA](https://appshunter.io/developer/6776055556) |

## What reviewers say

### ARPJAM Studio

[App page](https://appshunter.io/ios/app/arpjam-studio/id6775859535)

This app offers a generative synthesizer experience focused on sound design without requiring keyboard skills. It allows users to shape waveforms, filters, and effects in real-time as music plays, offering a unique approach to music creation for those who enjoy sound sculpting.

**Highlights:** Generative arpeggios with multiple waveforms, Probability-based drum generation, Chord progression locking, Real-time XY pad parameter control, Assignable LFOs for dynamic sound shaping, Play pad for layering live input, Preset saving and sharing

**Features:** Vision Pro support

**In-app purchases:** none


### 4trMTR

[App page](https://appshunter.io/ios/app/4trmtr/id6776449627)

Record and layer multiple musical performances one track at a time to create a complete song. Easily manage your projects by saving, loading, and creating new ones through a simple tap interface.

**Highlights:** Four-track recording, Layered performances, Project saving, Project loading, New project creation

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

**In-app purchases:** none


## Frequently asked questions

### Is ARPJAM Studio free?

ARPJAM Studio costs $12.99, with no in-app purchases.

### Is 4trMTR free?

4trMTR costs $0.99, with no in-app purchases.

### Do ARPJAM Studio or 4trMTR have ads?

Neither ARPJAM Studio nor 4trMTR shows ads.

### Which is updated more often, ARPJAM Studio or 4trMTR?

ARPJAM Studio ships an update every 2 days, and 4trMTR every 3 weeks. Most recently, ARPJAM Studio was updated on October 10, 2026 and 4trMTR on October 6, 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.*