# VOSIS vs ddtctmcc

The clearest difference is rating: ddtctmcc at 5.0 against VOSIS's 4.2. ddtctmcc also leads on update cadence (daily vs every 8 months) and review sentiment (100% vs 86%). 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.

ddtctmcc holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 7 respectively. Written reviews point the same way: 86% of VOSIS's written reviews are positive against 100% of ddtctmcc's.

VOSIS ships an update every 8 months, ddtctmcc daily. The most recent releases landed on September 4, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | VOSIS | ddtctmcc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/vosis/id783342051/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/ddtctmcc-ff/id6460858922/reviews)** |
| Number of ratings | 5 | **7** |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Daily** |
| Monetization | Free | Free |
| Size | 11 MB | 6 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Life Orange LLC](https://appshunter.io/developer/783342054) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## 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


### ddtctmcc

[App page](https://appshunter.io/ios/app/ddtctmcc-ff/id6460858922)

This free music app translates touch gestures into MIDI Control Change messages. It offers a 2D touch area to control three MIDI values and two gesture recording modes: infinite looping or one-time playback triggered by buttons.

**Highlights:** 2D touch area for MIDI control, X, Y, and Touch On/Off MIDI values, Looping gesture recording, One-time gesture playback, Background operation, AUv3 support

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

**In-app purchases:** none


## Frequently asked questions

### Is VOSIS free?

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

### Is ddtctmcc free?

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

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

ddtctmcc is rated higher. VOSIS averages 4.2 out of 5 from 5 ratings, while ddtctmcc averages 5.0 from 7 ratings.

### Do VOSIS or ddtctmcc have ads?

Neither VOSIS nor ddtctmcc shows ads.

### Which is updated more often, VOSIS or ddtctmcc?

VOSIS ships an update every 8 months, and ddtctmcc daily. Most recently, VOSIS was updated on September 4, 2026 and ddtctmcc on August 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.*