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FRMS - Granular Synthesizer by Imaginando

Imaginando released FRMS - Granular Synthesizer on iOS, macOS, Windows, and even Android! This app packs four different synthesis engines into one powerhouse. Imaginando have their own Cloud Sync, which means you'll be able to take your projects with you between any of the available OSes. It arrives on sale for 50% off!

FRMS can be used as an AUv3 on iOS, and even features MIDI Polyphonic Expression (MPE) and Ableton Link.

FRMS - Granular Synthesizer App Store Description:

FRMS is a versatile hybrid synthesizer that combines Granular, FM, Subtractive and Additive synthesis using a flexible layering system.

FRMS takes the interesting and exciting world of granular synthesis and gives it a musical edge by mixing it with FM synthesis to produce a wide variety of possible timbres, with a sleek and modern interface. From heavily-dense ambient drones, to glitchy mechanical beings, turn simple sounds into complex evolving soundscapes, with up to four layers of synthesis in any combination.

Attention: FRMS is a CPU intensive app, therefore some devices with lower hardware specifications might not be able to play 4 simultaneous voices, resulting in possible audio glitches. The density of grains is the most significant aspect regarding performance. A 2nd gen iPad Pro is able to play all of the bundled presets with 4 voices.


- 4 synth engines, 4 layers per voice
- Granular, FM, Additive, Subtractive
- 8 FM modes, layers as operators
- Granulate Samples or Live Audio
- Up to 20 grains per layer
- 1 modulation matrix per layer
- 2 EG’s per layer
- 1 filter per layer and a master filter
- 4 voices polyphony
- 4 LFO’s with 5 modes
- Arpeggiator with 5 modes
- Delay and Reverb FX as layer send
- High Quality Sample Bank
- Built-in Audio Recorder
- MPE Compatible
- Ableton Link

Start with FRMS built-in library of samples, load your own, or even granulate live audio. Stack up to 4 layers of synthesis, with independent envelopes and modulation to create unique sounds with movement.

FRMS includes Imaginando’s Cloud Sync functionality (requires Imaginando account) so you can store and share your creations across devices with ease. Capture sounds wherever you are, then refine them in your studio, keep your creativity with you, wherever you go.
March 23, 2020  | person_outline Tim Webb
Looks great so far except for some issues of overloading my Air2 cpu with only two notes at 1024 and high quality off. I have reported this, and I’m sure the developers will sort it as they have been excellent in the past with their other iOS apps.
March 23, 2020  | person_outline Fruitbat1919
To add to my previous comment.

The developers admit that the resources needed by the app are high, but they will endeavour to reduce them if possible.

For people using an older iPad, I am advised that reducing the Density knob on all layers can make it easier on the resources.
March 23, 2020  | person_outline Fruitbat1919
Hello good people of iOS music community.

I would like to say that personally I do not like those apps that put high demand on CPU. Many people will be unable to use it.
March 23, 2020  | person SoundShovel

That user-name works on a lot of levels.
Enjoying this app immensely

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