A beautiful and playful multi-voice synthesizer.

Seaquence lets you create, modify, and share musical compositions of swimming "planktone" creatures in a stereo-spatialized mixing dish. Each creature has a voice and a sequencer, and only the closest are heard as they swim around your view. With Seaquence's fully capable audio engine, you can create layered and dynamic compositions with a wide range of sounds ranging from ambient drones to intricately layered rhythms and transients. With its playful and colorful interface, even composers who are brand new to synthesis will be able to unlock their synesthetic creativity. You can save your sessions, post and share them, and explore the Seaquence Galaxy to listen what others have shared to get inspired.

Features included in download

• Polyphonic synth engine
• Dynamic spatial mixer and stereo-panning engine
• Up to 5 note polyphony per voice
• Up to 8 voices can be heard simultaneously (user settable)
• Up to 64 unique voices in a composition (only the closest voices are heard)
• A true multitouch experience, up to 11 simultaneous touch points supported
• Intuitive visual multitouch voice editor
• Unique swimming physics and swim behaviors — swim patterns are based on synth and sequencer parameters per-voice
• 16x16 multitouch step-sequencer matrix
• Radial chromatic scale editor with octave
• Amplitude envelope generator + length (ADSR+L) with curves and hold
• Precision, sample-based clock and sequencing engine
• Variable tempo, supporting 1 to 360 BPM with tap-tempo.
• Global session transpose
• 5 waveform shapes: Square, Saw, Tri, Sin, Noise
• Save your own session presets
• 30+ included session presets
• Social sharing features - post and share links to sessions
• Session links are maintained — trace back the history of a composition, see who remixed a session
• Audio and Video recording and export using Apple ReplayKit. Share performances!

Features of Seaquence Complete (unlocked with a single In-App Purchase)

• Per-voice state-variable filter with morphable hi-pass, band-pass, lo-pass, and notch modes
• Filter attack envelope generator with resonance (Q) and curve
• Swing/Shuffle
• Step length subdivision: 1/1 to 1/64, including triplets
• Portamento/Glide with curve editor
• Additional monophonic voice modes: Sub-Oscillator tuned to a 5th and Detuned Unison
• Delay effect on the master channel with feedback and individual voice fx-send
• MIDI notes i/o per voice
• MIDI cc i/o per voice
• MIDI clock sync
• Assignable MIDI notes/cc/clock in/out per MIDI device
• User-adjustable MIDI Latency
• Optionally enable/disable Audio engine when using MIDI

You purchase directly supports our two-person studio and helps us continue to release updates with new features and bug fixes! THANK YOU for your support.

Additionally, 10% of all profits go towards supporting our community at Gray Area Org, a San Francisco non-profit arts organization. More info at

What’s New

Version 1.2.2

New in v1.2.2

• Updated UI layout for iPhone X
• Fixed a bug that caused web links to load empty sessions
• Fixed a bug that could cause the sea to be untouchable

New in v1.2.0

• Support for iOS 12
• Support for landscape orientation on both iPad and iPhone
• New stereo delay with independent free or quantized delay time per channel allowing for lush, spacial delay effects.
• Notestep UI now allows any note division between 1 and 64
• New setting to enable/disable spawning with random notes

Ratings and Reviews

5.0 out of 5
30 Ratings

30 Ratings

J Stolarski ,

Parrot likes it

Seems to have a calming effect. Fun to play with,even though I haven’t figured it out.

Michaelmenary ,

Great app

This is a pretty unique app, and lots of fun to play with. I’ve got some really inspiring loops from it so far, and I’m sure I’ve only scratched the surface.

I did have some problems with the IAP, where my iPhone would not recognize the purchase made on my iPad, but with help from the developer this was resolved.

Feature request: can we get Audiobus or IAA implemented?

Developer Response ,

Hey Michael! Glad you’re having fun with the app. Seaquence is a universal app, so if you bought the Seaquence Complete IAP on an iPhone you should be able to use that on your iPad as well. Make sure you’re logged into the same iTunes account on both devices and tap “Restore Purchase” in the Seaquence Complete screen on the other device.

Bunny Lux ,

Add Audiobus support!

I love this app but please add Audiobus support. This would make it amazing.


Okaynokay, LLC
14.3 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Okaynokay
In-App Purchases
  1. Seaquence Complete $6.99


  • Family Sharing

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

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