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.

LayR's primary sound components are called Performances where a Performance is a set of Instruments and each Instrument is a set of Layers and each Layer is a complete synthesizer. A performance can consist of any number of instruments each with its own MIDI channel and crossfading keyboard span. Each Instrument can consist of any number of Layers to a maximum of 128.

Each Layer has a dual oscillator that can morph with modulation between two shapes and phase states, two rich and warm state variable filters, a wave folder and a mixing section to blend oscillators and filters in any serial/parallel combination.

For modulation (frequency, amplitude and phase) there are two Low Frequency Oscillators ranging from DC to audio frequency switchable to optionally follow keyboard pitch and restart phase when a note is started. Two loopable ADSR envelopes ranging from fractions of a second to over 100 seconds, an amplitude ADSR and a random number generator with a smoothing filter. With stereo delay, reverb and EQ on the output section LayR excels at not only emulating normal analog synth sounds but also at creating massive pads and huge spacy ambient textures with extremely long evolution cycles.

Focused at keyboard players looking for a mobile synth that can be reliably used live on stage LayR is equally at home in the studio. An extensive selection of usable instrument and performance presets are included which can be loaded using MIDI bank select and program change messages in the same manner as hardware synths.

LayR sports almost unparalled and extremely flexible MIDI control. Every parameter in the synth engine can be assigned to any MIDI Control Change number and parameters spread across multiple Layers can be grouped and controlled by a single MIDI cc with assignable range and direction.

There is also an 8 track, 16 step Arpeggio Sequencer which can be used to create all sorts of exciting polyrhythmic looped patterns or even ambient generative music. Each track can have it's own speed, playback mode and length.

On top of all that LayR has a MIDI Controller Mixer that can be used during performance to control the synth engine in real time and can also transmit MIDI cc's from LayR's output port to other destinations.

Full IAA, Audiobus, Audio Unit and Link compatibility means LayR can be used with all hosts and other music apps on iOS and desktop DAWs.

What's New

Version 1.2

- Audio Unit v3.
- New App Icon.
- New look for User Interface.
- PDF Manual ( please read it! ).
- An optional "Light" colour scheme.
- More new presets!

- Zoomable, scrollable editor.
- Shortcut buttons to quickly zoom to locations in the Layer Editor.
- Presets shared between instances and with stand-alone app.

- A slider strip for each chanel groups Instrument levels while maintaining relative volumes.
- A slider for every MIDI controller assigned in the current Performance.
- Slider strips can renamed or hidden from the mixer panel.
- Query which instrument/layer/dial any MIDI controllers have been assigned to in the current Performance.
- Optionally transmit CCs to the MIDI output port.

- Clearly labelled controls.
- Double tap or pinch on the background to zoom the UI.
- New Mod Matrix for routing modulation sources to any destination.
- New Oscillator mode providing coarse/fine tuning and improved FM with a much greater range.
- New "Fixed" oscillator mode to decouple the oscillator from MIDI notes.
- New "Sync" mode for LFOs keeps LFOs in all playing voices synced to the same phase.
- Dials: Increased accuracy and threshold between vertical and horizontal tracking (coarse/fine).

- Every track can now have it's own mode, length and speed.
- New Playback Types.
- New Event Types.
- Copy/Paste/Clear tracks (long press on track).
- New "Hold" button, the sustain pedal is no longer used to hold arpeggiator notes.

- Drag and drop Instrument Strips to rearrange order.
- Drag and drop Instrument Strips to copy into or merge with another Instrument.
- Drag and drop Layer Strips to rearrange order within an instrument
- Drag and drop Layer Strips to the mixer background to create a new instrument with that Layer
- Drag and drop Layer Strips to other Instruments to make a copy in the destination Instrument.

- Easier Import/Export for presets.
- Bank Files: A new file type for importing and exporting entire banks of presets to Files etc.
- Banks and programs can now be deleted/cleared.

MIDI: ( See manual )
- A new MIDI input port for live "Performance" bank/program select using any channel. (optional)
- Option to use either MSB or MSB for bank select.

- Optional "expert level" swipe shortcuts to open or close various panels.
- Performance "Append…" has been fixed, you can now append multiple performance programs to the currently loaded performance.
- Reverb is now silenced when changing presets.
- “Fold” amount in Filter 2 is now adjusted downwards as key notes go up, reducing aliasing artefacts as notes get higher.
- An Optional "Legacy Mode" to maintain compatibility with older devices

+ various minor bug fixes and more!

Ratings and Reviews

4.9 out of 5

28 Ratings

28 Ratings

Endless Exploration!


This synth has rich sounds that will blow you away! Being able to build with layers opens up a huge number of opportunities that will allow you to create some incredibly intricate sounds.

Highly recommended!

Creativity Inspiring


Totally awesome in its depth and ability to create very complex, rich sounds in an interface that is remarkably intuitive for the power that it has. Plenty of great presets to get you started, too. Highly recommended!



When I first started out on modular synthesizers, I could never have foreseen something like this. It’s a universe of possibilities, layers, combinations. Very highly recommended and a bargain at many times the price. Well done.


Living Memory Software
49.9 MB
Requires iOS 9.1 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, and iPod touch (6th generation).
Age Rating
Rated 4+
© 2016 Living Memory Software


  • Family Sharing

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

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