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Release Date: March 14, 2017

Seaquence, a unique musical composition app is available on the iOS App Store. It runs on all modern iOS 8 (or newer) devices and screen sizes.

Seaquence is an app for iPad and iPhone that allows you to compose music with collections of synthesizer creatures. Only the creatures in view can be heard, resulting in organic and dynamic soundscapes as you explore the mix. The creature shape, body and tail are generated from the parameters of its synth and sequencer, which in turn modify the way they swims and dynamically affects the composition. Visually immersive and sonically dynamic, Seaquence is a unique and fun audiovisual experience!

Featuring a pro-level synthesizer and timing engine controlled by a fun and direct interface. Even composers who are brand new to synthesis will be able to unlock their synesthetic creativity. For more experienced users, Seaquence features MIDI support and tempo sync, allowing the app to integrate with other apps gear.

Edit your sounds with multi-touch controls including a polyphonic sequencer, chromatic scale w/octave, amplitude envelope editor, multiple waveform types, and more. With a single in-app purchase for the introductory price of $6.99 USD, all extended features of the app unlock and include delay fx and fx send, filters (hipass, bandpass, lopass, and notch) and filter attack envelope, additional voice modes, extra sequencer controls, transpose, MIDI + Clock Sync, and more.

Seaquence enables you to share your sessions with friends with a sharable link, and has an in-app browser todiscover what other people are making.

The Seaquence App is created by Okaynokay (Ryan Alexander and Gabriel Dunne), based on their original project which was originally created by Ryan Alexander, Gabriel Dunne and Daniel Massey, with support from Gray Area Foundation for the Arts.


Watch Teaser on Youtube

Watch Demo on Youtube


Included with FREE download:

  • Fully featured polyphonic synthesis module with support of up to 5 note polyphony per voice
  • Dynamic spatial mixer and stereo-panning engine
  • A true multitouch experience, up to 11 simultaneous touch points supported.
  • Unique swimming physics and swim behaviors — swim patterns are based on synth voice parameters
  • Up to 8 voices can be heard simultaneously
  • Precision, sample-based clock and sequencing engine
  • Intuitive visual multitouch voice editor
  • 16x16 multitouch sequencer matrix
  • Chromatic scale editor
  • Octave editor
  • Amplitude envelope + length (ADSR+L) with curves and “hold”
  • 5 oscillator waveform shapes: Square, Saw, Tri, Sin, Noise
  • Social sharing features — Get a link to share your creations to friends
  • Parent links are maintained — trace back the history of a composition, see who remixed your creations

A single in-app purchase for the introductory price of $6.99 USD unlocks the full app and includes:

  • State-variable filter with hi-pass, band-pass, lo-pass, and notch modes
  • Filter attack envelope with resonance Q and curve editor.
  • Swing/Shuffle
  • Note step editor: 1/1 to 1/64, including triplets
  • Global transpose
  • Tempo/BPM
  • Portamento/Glide with curve editor
  • Additional voice modes in addition to Polyphonic:
    • Monophonic with sub-oscillator tuned to a 5th
    • Unison with detune
  • Delay FX module with feedback and individual voice FX-Send
  • MIDI Notes In/Out: Send/Receive MIDI notes from external gear, up to 16 MIDI channels, addressable per voice
  • MIDI Ctrl In/Out: Send/Receive MIDI ctrl data from external gear, up to 16 MIDI channels, addressable per voice
  • MIDI clock sync: master or slave

10% of all profits go towards supporting our community at Gray Area Foundation for the Arts, a San Francisco non-profit arts organization.

More info at

About Us

Seaquence was created by Okaynokay (Ryan Alexander and Gabriel Dunne), from the San Francisco Bay Area.

Ryan Alexander

Ryan artist and researcher currently focused on interactive audiovisual experience design. His recent works include generative simulations, live visual performance, spherical photography, and motion graphics experiments.

Gabriel Dunne

Gabe is an artist from San Francisco whos work includes audiovisual experiences, performance, and installation. With a background in design and music, he’s used computers in his practice ever since he was introduced to his Dad’s Commodore 64 and Amiga 1000 as a toddler.


In the spring of 2009 Ryan Alexander, Gabriel Dunne, and Daniel Massey participated in fledgling arts organization Gray Area’s first artist residency in the Tenderloin, the heart of San Francisco. While in residence they created the original web app with support from the Gray Area team. Seaquence became a seminal project in the organizations history that blossomed into a vibrant community and has accumulated well over 300,000 compositions. It continues to be enjoyed by people around the world.

Seaquence spanned into physical installation as well. A hardware ‘SeaNome’ RGB button grid was created as a hardware controller and used in physical installations.

Since then a lot has changed. was originally written in Adobe Flash before the original iPad was released. Flash has slowly been phased out as an interactive platform on the web, and doesn’t work at all on mobile devices.

In mid-2014 Ryan and Gabe decided that the best way to keep the Seaquence community alive was to do what they had been talking about for years — bring the app to iPad. Over the next two and a half years, they built a new version of Seaquence from the ground up with a brand-new codebase, introducing shiny new graphics and a high quality sound engine, graduating Seaquence from a Flash web-toy to a fully-featured musical experience.


Daniel Massey

Daniel is an artist, musician, and designer currently based in Berlin. He was a co-creator of the original Seaquence project.

Gray Area ORG

Gray Area Foundation for the Arts, Inc. is a 501(c)3 Non-Profit Organization supporting Art & Technology for Social Good.

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