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

This app has been updated by Apple to use the latest Apple signing certificate.

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

4.8 out of 5
27 Ratings

27 Ratings

Stuart Gardner ,

Gorgeous to the eye, calming to the ear

I love all of Eno’s & Chilver’s generative music apps; Bloom, Bloom: 10 Worlds, Air, Scape, Reflection and Trope, and would urge that you explore all of them.
I sometimes “compose” on Trope, which means playing it as a musical instrument by tracing shapes or lines with one’s finger on the screen, but I more often let it “play itself” by choosing the “listen” option. The always unique displays of abstract, multicolored forms become truly dazzling and hypnotic. Do you know the abstract paintings of Wassily Kandinsky? Imagine those coming to life, the colors and shapes constantly changing and moving.
Also, I frequently sleep to the sound of Trope playing itself. I turn the screen off and set the volume at a barely audible level when I do this. Try it. You can set the built in timer to stop the app after you’ve drifted off, but I like to let it play straight through the night (I do this with Bloom and Air, as well).
I bought Trope when I was using an iPhone 4s. It always performed perfectly for me, and now it’s performing perfectly on my iPhone X.
It’s a marvelous app.

Emusette ,

My favorite music player

I listen and watch this app make music. I find this more enjoyable than a music service simply because it can shuffle the many moods and generates unlimited music. Each song being different and never the same. I use this more than any other music app, including my music subscription services!! I don’t make music with it, I just listen and let it come up with its own things. Simply amazing. Between this and reflection I have more ambient music than my iTunes library! Ha!

BAR112 ,

Amazing generative music app!

Was uncertain since app hasn’t been updated in 3 years; however, it works fine on my iPad Pro with iOS 11. Having been a fan of Brian Eno in my youth, I enjoy creating and listening to these ethereal and calming tones. How to use: Draw several lines or dots with your finger, then wait for the song to develop; the music will follow the patterns you created. Also, the neon color flows and geometrics are beautiful to behold! Very relaxing and meditative, for those into this genre.

App Privacy

The developer, Opal Limited, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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