# SUS4 Loop Builder vs OSE

The clearest difference is in-app purchases: OSE at none against SUS4 Loop Builder's 3. SUS4 Loop Builder's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. SUS4 Loop Builder sells 3 in-app purchases, starting at $0.99 per month. OSE asks for nothing beyond the download.

SUS4 Loop Builder ships an update every 4 weeks, OSE every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SUS4 Loop Builder | OSE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (7 ratings)](https://appshunter.io/ios/app/ose-music-app/id6793905449/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 27 MB | 81 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ThePaulSmith](https://appshunter.io/developer/319584506) | [Outhentic EOOD](https://appshunter.io/developer/6793905451) |

## What reviewers say

### SUS4 Loop Builder

[App page](https://appshunter.io/ios/app/sus4-loop-builder-loop-pedal/id6777230284)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SUS4 Loop Builder Pro Monthly | $0.99 | per month |
| SUS4 All-Access | $4.99 | per month |
| SUS4 Loop Builder Lifetime | $59.99 | one-time |


### OSE

[App page](https://appshunter.io/ios/app/ose-music-app/id6793905449)

A pocket-sized toolkit for musicians featuring a multi-touch synth, MIDI recorder, piano roll editor, tuner, metronome, and audio tools. It complements desktop Digital Audio Workstations with professional-grade DSP effects and editing capabilities.

**Highlights:** Expressive multi-touch synth with DSP effects, MIDI recorder and piano roll editor, Chromatic tuner with reference tones, Metronome with savable presets, Audio recorder with real-time effects, Audio editor with restoration tools

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

**In-app purchases:** none


## Frequently asked questions

### Is SUS4 Loop Builder free?

SUS4 Loop Builder is free to download, with in-app purchases available.

### Is OSE free?

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

### Do SUS4 Loop Builder or OSE have ads?

OSE shows ads; SUS4 Loop Builder does not.

### Which is updated more often, SUS4 Loop Builder or OSE?

SUS4 Loop Builder ships an update every 4 weeks, and OSE every 3 weeks. Most recently, SUS4 Loop Builder was updated on October 25, 2026 and OSE on October 24, 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.*