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 1.45

- Fix: A workaround for some hosts that don’t provide correct sample rate until very late in initialisation process.
- Fix: A silly “typo” bug where LayR was returning a spurious error from its render block resulting in no audio in some hosts.

Ratings and Reviews

4.5 out of 5
80 Ratings

80 Ratings

rexteracious ,

LayR as guitar synth

This is the only synth app on iPad that allows separate midi channel input for each string. You can set up 6 identical layers on 6 channels and use the Fishman Triple Play pickup in mono mode. Beautiful rich synth engines with so many possibilities. I limit each channel to the note range of each string as well.
This is the missing piece to the Fishman Triple Play Connect. Just start the triple play app in the background to initialize mono mode and run LayR over it. Tracks beautifully.

FreakofDisco ,

Rich, mesmerizing sounds but

I have 75% of the paid synths on the App Store and I can say without doubt that Layr has the richest, most beautiful sounds. The pads are lush, the keys and leads are sharp yet warm. There’s something cinematic and magnetic about the experience, however...

The experience is stunted by how power hungry this instrument can be. I am using an iPad Pro (2018 version), which is second most powerful iPad available today from a specs aspect. I can only host one instance of this app in Cubasis, and even the one instance takes up a whopping 50% power, with no effects or other tracks. In short, it’s not a playable instrument. It’s a feat of technology and beauty, but what’s the point of it all if it can’t be used to create?

I want to support the developers and future updates and sound patches, but first thing first: the app needs to be playable.

Strizbiz ,

Great app, imagine if it also had a built in sampler!!!!

This app is great, one of my favs, got it when it first came out when I had an Air 2. I bought an IPad Pro 2020 last year and now I can use it to its full potential and I love it even more. Just a thought....but imagine if it had a built in sampler too with pitch and Time shift....🤯🤯🤯🤯🤯🤯🤯 would be the one ring to rule them all!!!!

Developer Response ,

This issue was resolved a long time ago. Anyone who experiences crashes or bugs should write to us and let us know via our support links. We will fix all bugs as soon as we know about them!

App Privacy

The developer, Living Memory Software, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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