Trope, designed by ambient pioneer Brian Eno and musician / software designer Peter Chilvers, expands further on the ideas introduced by Bloom, their acclaimed iPhone application.  Darker in tone, Trope immerses users in endlessly evolving soundscapes created by tracing abstract shapes onto the screen, varying the tone with each movement.

Recommended for headphones and external speakers.

"Trope is a different emotional experience from Bloom - more introspective, more atmospheric. It shows that generative music, as one of the newest forms of sonema, can draw on a broad palette of moods." - Brian Eno

What’s New

Version 1.3

Trope has been given a complete interface redesign for iOS 8. It is now a Universal app, and runs natively on the iPad as well as the iPhone.

Ratings and Reviews

doctormike ,


Visually intriguing, beautiful - and aurally engaging, spacious
Longer tones than Bloom, and results look more - to me - like a moving painting
Better than TV

electronards ,

Not happy

Why is this listed as a iPad app it clearly is for iPhone feel like I was just ripped off to be honest. Low res graphics and well just not cool to sell this as a ipad app

Jrs505 ,

Very cool

Definatly need to use headphones or speakers. Another great interactive mood music app.


Opal Limited
38.7 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.
English, French, German, Italian, Japanese, Simplified Chinese, Spanish
Age Rating
Rated 4+
© Opal Limited 2009


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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