Aphelian 4+

Geometrical Sequencer

Juan Maria Bordon

    • 4.6 • 43 Ratings
    • $11.99

iPad Screenshots


An innovative composition tool that lets the user see and manipulate musical forms, exploring the relation between geometry and music.

APHELIAN features a new kind of sequencer, based on a geometrical metaphor. The interface of the Standalone App is composed of 4 independent instruments. In the AUv3 extension, Aphelian behaves as a single MIDI PROCESSOR that could be used multiple times within the AU HOST to feed different audio generators.

Each geometrical unit has a SHAPE that function as a TIMELINE. The user can DRAW EVENTS in the TIMELINE to create melodies. The SHAPES are located over a NOTE MAP that defines the NOTE of each EVENT. The SHAPES can be easily transformed using gestures that take full advantage of the touch screen.

Any transformation in the SHAPE results in a predictable modification in the musical composition. APHELIAN offers an amazing balance between joyful exploration and accurate detail control, proposing an organic way to compose music.

Inspired by Johannes Kepler’s geometrical model of the solar system, where the planets play melodies as they orbit the sun assembling a cosmic symphony.

4 orbital sequencer engines.
1 Global Harmonic controller
4 Internal Synthesizers.
1 Internal Drum machine.

SUPPORTS: AUv3 extension, Inter App Audio, Ableton Link Sync, MIDI OUT per channel (Note on/off and Control Change), Audiobus and Audiobus State

Organize/Backup your sessions and banks through the Files App

Share your sessions using the standard share menu

WARNING: Some graphic configurations of this app may potentially trigger seizures for people with photosensitive epilepsy. If you have a history of epilepsy or seizures, consult a doctor before use.

What’s New

Version 1.2.2

* Swing control
* iOS 14 compatibility fixes

Ratings and Reviews

4.6 out of 5
43 Ratings

43 Ratings


New arp mode AUDIO UNIT so much fun can‘t wait for sequencer update

Was looking for this on a sale to try it out and it came at the right time now that the 1st part of the auv3 -arp is here- I can only imagine the fun and results to be had when the auv3 sequence mode is available. I had a blast with this throughout the weekend and the non auv3- stand-alone mode is fantastic from a musician standpoint and very aesthetically pleasing. Glad you can customize the color scheme to your liking. Looking forward to Aphelian Labs future updates and releases. Thanks for this dev/s! This definitely will be getting a lot of use from me!

Michaelmenary ,

Great composition tool

You can get something up and running in this app in a few minutes, and overall it’s a very intuitive process to create a great sounding piece of music.

I’m sure this will appeal to people with little musical knowledge as much as it will appeal to anyone with a good grasp of music theory. I’m loving both the ease of composition as much as I am looking forward to making more complex music.

Well done guys - original approaches to making music on mobile devices are becoming more rare, but this app combines flexibility, depth and inspiration in equal amounts.

djpraxis ,

Simply one of the best!!

This app is so amazing! And the great commitment from the development team is an example to follow for other developers. Always improving and updating. I wish there were more tutorials, but just by simply playing and experimenting with the vast possibilities can be greatly surprising and fun! Outstanding app!

App Privacy

The developer, Juan Maria Bordon, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

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


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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