# Contrast — A Playground for Sound

> Interactive sound creation app using touch gestures to manipulate audio channels. (iPhone/iPad app by Aero Deko.)

- Source: https://appshunter.io/ios/app/contrast-a-playground-for-sound/id1019176648 (this page in markdown: same URL + `.md`)
- Developer: [Aero Deko](https://appshunter.io/developer/507882387)
- Category: Music, Entertainment
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 1 MB
- Languages: American English
- Released: 2015-08-17
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/contrast-a-playground-for-sound/id1019176648/reviews.md

## What is Contrast?

Tap, double-tap, drag, pinch, and rotate to make sound.

Contrast is an interactive playground for sound. Add squares by double-tapping anywhere. Squares represent channels of sound which can be manipulated in various ways dragging, pinching, rotating, and tapping.

Concept and programming by Johan Halin.
Design by Jaakko Tuomivaara.

## Key features

- Tap, double-tap, drag, pinch, rotate gestures
- Create sound channels with squares
- Manipulate sound channels
- Interactive audio playground
- Intuitive touch controls

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/contrast-a-playground-for-sound/id1019176648/reviews.md

### 4/5 — Nice!

*2020-03-30*

Very cool

## Frequently asked questions about Contrast

### What are the basic controls in Contrast?

Contrast utilizes intuitive touch gestures such as tapping, double-tapping, dragging, pinching, and rotating to create and manipulate sounds within the playground.

### How do I create new sound elements in Contrast?

You can add new sound channels by double-tapping anywhere on the screen. These newly added squares represent distinct channels of sound.

### Is Contrast available on Android devices?

Currently, Contrast is only supported on iPhone and iPod devices, as indicated by its platform compatibility.

### What is the age rating for Contrast?

Contrast has an age rating of 4+, making it suitable for a wide range of users interested in exploring sound.

### Does Contrast offer different subscription tiers?

No, Contrast is a free application and does not offer any subscription tiers or in-app purchases.

### How often is Contrast updated?

The application was last updated on August 17, 2015, with version 1.0 being the latest release.

### What kind of music can be created with Contrast?

Contrast is designed as an interactive playground for sound, allowing for experimental and generative music creation through its unique manipulation tools.

### Does Contrast contain advertisements?

No, Contrast is ad-free, providing an uninterrupted experience for users exploring its sound manipulation features.

## Version history (last 1 release)

### 1.0 — 2015-08-17

This app has been updated by Apple to display the Apple Watch app icon.

## Apps similar to Contrast

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [SOLO  Nr.19](https://appshunter.io/ios/app/solo-nr19/id884781236) | 4.4 (7) | Free | Music |
| [ToyTone](https://appshunter.io/ios/app/toytone/id1016447265) | 4.8 (12) | Free | Music |
| [Orooga](https://appshunter.io/ios/app/orooga/id1355924099) | 5.0 (4) | $0.99 | Music |
| [Duality Shift - Cadence Flux](https://appshunter.io/ios/app/duality-shift-cadence-flux/id1480949911) | — | Free | Music |
| [Sinusoid](https://appshunter.io/ios/app/sinusoid/id416624795) | 4.9 (13) | $4.99 | Music |
| [Annoydio jr](https://appshunter.io/ios/app/annoydio-jr/id813732362) | 5.0 (1) | $0.49 | Music |

## More apps by Aero Deko

- [Circlo — Ambient Clock](https://appshunter.io/ios/app/circlo-ambient-clock/id523405247)
- [Intergalactic FM — IFM](https://appshunter.io/ios/app/intergalactic-fm-ifm/id541440061)
- [Deko — Beautiful Wallpapers](https://appshunter.io/ios/app/deko-beautiful-wallpapers/id582647344)
- [Conform](https://appshunter.io/ios/app/conform/id664574539)
- [Soi](https://appshunter.io/ios/app/soi/id986051970)

All apps by Aero Deko: https://appshunter.io/developer/507882387

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*