# MULE 공식 앱 vs Quavery Theremin

The clearest difference is review sentiment: Quavery Theremin at 100% against MULE 공식 앱's 39%. Quavery Theremin also leads on rating (5.0 vs 3.0) and update cadence (weekly vs every 3 months). MULE 공식 앱's advantage is in-app purchases (none vs 3). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Quavery Theremin sells 3 one-off in-app purchases. MULE 공식 앱 asks for nothing beyond the download.

Quavery Theremin holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 39% of MULE 공식 앱's written reviews are positive against 100% of Quavery Theremin's.

MULE 공식 앱 ships an update every 3 months, Quavery Theremin weekly. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | MULE 공식 앱 | Quavery Theremin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/mule/id1453003081/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quavery-theremin/id6800290999/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 39.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | Free |
| Size | 7 MB | 9 MB |
| Requires iOS | 18.5 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JUNG SOO SONG](https://appshunter.io/developer/728120994) | [Leo Makkinje](https://appshunter.io/developer/349849464) |

## What reviewers say

### MULE 공식 앱

[App page](https://appshunter.io/ios/app/mule/id1453003081)

Receive real-time notifications for used musical instruments matching your keywords. Access a comprehensive marketplace for instruments, practice rooms, and musician recruitment, all accessible via map-based services.

**Highlights:** Keyword-based used instrument alerts, Email notifications for marketplace listings, Practice room and ensemble room information, Musician recruitment and job postings, Map-based services for local listings, Performance news and user reviews

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

**In-app purchases:** none


### Quavery Theremin

[App page](https://appshunter.io/ios/app/quavery-theremin/id6800290999)

Transform facial movements into music with this innovative instrument. Control pitch, volume, and effects using only your expressions, with a live visualizer to guide your performance. It's a touchless, private, and free way to create unique sounds.

**Highlights:** Facial expression to sound control, Touchless instrument interface, Live status panel for sound visualization, Multiple waveforms and pitch scales, Privacy-focused design, no data sent, Built-in control guide

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $0.99 | one-time |
| Medium tip | $2.99 | one-time |
| Large tip | $4.99 | one-time |


## Frequently asked questions

### Is MULE 공식 앱 free?

MULE 공식 앱 is free to download, with no in-app purchases.

### Is Quavery Theremin free?

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

### Which has better reviews, MULE 공식 앱 or Quavery Theremin?

Quavery Theremin is rated higher. MULE 공식 앱 averages 3.0 out of 5 from 2 ratings, while Quavery Theremin averages 5.0 from 1 ratings.

### Do MULE 공식 앱 or Quavery Theremin have ads?

Neither MULE 공식 앱 nor Quavery Theremin shows ads.

### Which is updated more often, MULE 공식 앱 or Quavery Theremin?

MULE 공식 앱 ships an update every 3 months, and Quavery Theremin weekly. Most recently, MULE 공식 앱 was updated on October 29, 2026 and Quavery Theremin on October 26, 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.*