LayR is a massively polyphonic, multi-timbral synthesizer for iPad and iPhone, optimized for modern 64 bit devices delivering up to 256 voices of rich, multi-layered and textured sounds.  Focused primarilly at keyboard players looking for a mobile synth that can be reliably used live on stage LayR is also equally at home in the studio.

LayR's main presets are called Performances: A Performance is a set of Instruments where each instrument is a set of Layers and each Layer is a complete synthesizer. Performances can consist of over 100 instruments, each with it’s own MIDI channel and crossfading keyboard span. Voices are assigned to each layer in each instrument until the audio engine runs out of available voices. This means that with normal playing technique it is possible to create extremely complex texture on each note or even to have a single insane monophonic instrument equivalent to 100 synths all playing at once!

Every Layer has a dual oscillator which can  morph with modulation between two shapes and phase states, two rich and warm state variable filters and a mixer to blend the oscillator with filters in any serial/parallel combination. For modulation (Frequency, Amplitude and Phase) there are two aux oscillators ranging from DC to  audio frequency switchable to optionally follow keyboard pitch and restart phase when a note is started. 2 loopable ADSR envelopes ranging from fractions of a millisecond to 100 seconds, a volume level ADSR and a random level 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 ambient textures with extremely long evolution cycles.

LayR is provided with a very comprehensive selection of usable instrument and performance presets which can be loaded using MIDI bank select and program change messages in the same manner as hardware synths. There is also an 8 channel arpeggiator with a 16 step event sequencer for creating exciting polyrhythmic patterns. Full IAA and Audiobus compatibility means LayR can be used with hosts and other music apps on iOS.

Mega synth *****
by 69reasons – Mar 15, 2017
I never write reviews but this deserves it. Mega awesome synthesiser stunning sounds and so capable. The possibility of this app is off the chart I love it

Stunning  *****
by @23skido – Aug 25, 2017
This is the future of iOS synths it sets a very high standard. blown away
 
Spectacular *****
by Perry Pelican – Mar 18, 2017
It amazes me to see apps like this. It could have been much less complete and still be great. This guy went the extra distance to create something special. LayR is special. The amount of control you have of the sound is extreme, using multiple layers with tons of features in a perfect interface. Impossible to regret purchasing this one.

Wow!!! *****

by Delphinus1950 – Jul 8, 2017
Both thumbs up for the developer of this beauty. With LayR it is possible to create very complex layered and textured sounds. The soundbanks, especially the banks added with the updates, are very inspiring to help me forward.

Stunned! Better than I could have ever hoped! Mind Blown! *****
by Thirdnail – Jun 17, 2017
Okay I have to admit I'm a bit of a sucker for ISO synths... I love VST's and VSTI's and have been using soft synths since they came out ... so about 16 years now. There are some really good soft synths out there, but this is like a DAW (like project 5) that can handle 100's of individual (instruments) and play them all together in a fluid and seamless note! You can add "Layr" upon "Layr" and make unique sounds that... more

Amazingly good *****
by Trueyorky – Mar 9, 2017
An app chock full of innovative features and capable of some stunning sounds and musical performances. LayR is breathtaking. WOW

Gros potentiel *****
by Synth Nitouch – Apr 20, 2017
Synthé très complet avec un son analogique très chaud et possibilités presque infinis en ajoutant les layers .Sons très riches ,parfait pour les drones Et l'ambient.Il manque peut être un peu de presets mais on en crée très facilement .

FEATURES ( v1.0.4 )
Inter-App Audio.
AudioBus 3. 
Abelton Link ( for Arpeggiator ). 
Up to 128 Voices ( 256 on iPad Pro and newer devices ).
Multi-Timbral with 8 individual stereo instrument outputs + full mix output.
Optimised 32 bit Audio Engine.
Multi Channel Arpeggiator with 16 step event sequencer.
Stereo Delay, Reverb and EQ on output section.
Ranged MIDI control for all parameters.
User can create MIDI Controller templates to quickly assign controllers to Layer UI controls.
MIDI Out port transmits from Keyboard, Assigned controls and Arpeggiator.
Performance and Program preset import & export via iTunes.
Performance and Program preset sharing via iCloud Drive.
Built-in Help.