# VOSIS vs ULang

The clearest difference is rating: VOSIS at 4.2 against ULang's 3.8. VOSIS also leads on review sentiment (86% vs 71%) and device support (3 vs 1). ULang's advantage is iOS requirement (8.0 vs 13.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

VOSIS holds the better App Store score, 4.2 against 3.8. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews point the same way: 86% of VOSIS's written reviews are positive against 71% of ULang's.

## The numbers

| Metric | VOSIS | ULang |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/vosis/id783342051/reviews)** | [3.8 (4 ratings)](https://appshunter.io/ios/app/ulang/id987460109/reviews) |
| Number of ratings | **5** | 4 |
| Positive reviews | **85.7% of reviews** | 71.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Monetization | Free | Free |
| Size | 11 MB | 20 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Life Orange LLC](https://appshunter.io/developer/783342054) | [Agoston Nagy](https://appshunter.io/developer/985925318) |

## What reviewers say

### VOSIS

[App page](https://appshunter.io/ios/app/vosis/id783342051)

This app transforms image data into sound, allowing for unique musical compositions and experimental sound design. It offers control over pitch, timbre, and envelopes to create shape-timbre relationships from visual input.

**Highlights:** Image sonification, Visual music composition, Experimental sound design, Pixel luminance audification, Shape-timbre relationships, Adjustable pitch and timbre, ADSR envelope control

**In-app purchases:** none


### ULang

[App page](https://appshunter.io/ios/app/ulang/id987460109)

Create digital soundscapes with a visual instrument designed for touch devices. It simplifies musical concepts with a limited grammar and input methods, offering a unique gestural interface for rhythm and time.

**Highlights:** Visual sound instrument, Digital soundscape creation, Touch-based interface, Simplified musical grammar, Unique gestural interface, Rhythm and time interaction

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VOSIS free?

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

### Is ULang free?

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

### Which has better reviews, VOSIS or ULang?

VOSIS is rated higher. VOSIS averages 4.2 out of 5 from 5 ratings, while ULang averages 3.8 from 4 ratings.

### Do VOSIS or ULang have ads?

Neither VOSIS nor ULang shows ads.

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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.*