LayR - a massively polyphonic synthesizer for iOS devices

LayR is a massively polyphonic, multi-timbral synthesizer for iOS devices, optimized for modern 64 bit CPUs and capable of delivering up to 256 voices of rich, multi-layered and textured sounds.

Full MIDI implementation and unparalleled flexibility unleashes the full power of the iPad in a portable form.

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for iOS devices, optimized for modern 64 bit CPUs and capable of delivering up to 256 voices of rich, multi-layered and textured sounds. 

Fully Featured
Synth Engine

Up to 256 individual synth voices each with a unique Dual Morphing Oscillator,  Dual State Variable Filters,  3 Envelopes, a Mixer  and a routing matrix for modulators with cycle times ranging from audio frequency to 100s of seconds. Perfected for long evolving textural sound design.


The base components in LayR are called Instruments. These are built by combining up to 128 layers per Instrument with each layer being a seperate synth. Instruments are stored in banks of Instrument presets which can be recalled manually or via MIDI.

Performance Presets

Any number of Instruments can be grouped into Performance Presets with each instrument in the Performance playing on any MIDI channel and routed to any one of 8 audio outputs. Performances are stored in banks and can be recalled manually or via MIDI. Performance presets also include a rich reverb and stereo echo/delay.


With 8 seperate lanes of events each playing with their own speed, direction and MIDI channel, LayR's famous arpeggio sequencer has an incredible variety of musical possibilities ranging from simple arpeggios to long evolving procedural performances.

MIDI Control

Every parameter in every layer in the performance can assigned to any MIDI controller with range, direction and grouping across layers for adjusting many parameters in parallel.  LayR also sports a MIDI Controller Mixer providing on-screen control over every MIDI controller assigned to the Performance. Along with 12 Macro controls used to simply morph the entire Performance.

of Presets

An extensive selection of presets provided by some of the best sound designers on iOS. Instrument and Performance presets are stored in banks which can be recalled manually or using MIDI Bank Select and Program messages. Presets can be imported, exported and shared.

Tutorial Videos

These videos cover nearly all of LayR's main features. There are also lots of hints and tips that might not be so obvious just by playing around with LayR's UI or reading the manual.

Some are very short, only a few minutes, others such as the Layer Editor and Arpeggio Sequencer videos are up to an hour long.

Stunning Presets

LayR Presets: Basement Cinematics from Brice Beasley

Brice is one of the several talented sound designers to contribute presets to LayR. These sounds really demonstrate the serious quality of the LayR Synth Engine and how, with some knowledge of synthesis, amazing things are possible. Check out the video below and be prepared to be blown away!

App Store Reviews

I was a bit cautious at first to get this as I've bought a few lemons in the past. But... LayR is undoubtably one of the finest iOS synthesisers on the App Store


This synth app is a dream come true for me, and I never expected something like this to happen on the iOS platform!


This is a very deep synth that seems almost unlimited in its potential. It's main strength is creating lush and complex textures and it's loaded with fantastic presets, especially the ones created by Brice (sic).


An app chock full of innovative features and capable of some stunning sounds and musical performances. LayR is breathtaking. WOW


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