Bram Bos

iOS Synthesizer Plugins

Ruismaker means ‘noise generator’ in Dutch. The original Ruismaker started its existence as a hardware drum machine, but is now available as an Audio Unit Instrument for mobile DAWs and sequencers. And the family is growing steadily.

Bram Bos’ Ruismaker plugins are about authenticity: everything you hear is synthesized in real-time by emulating classic electronic circuitry – giving your music that little bit more soul and offering lots of useful control over the sound of your music.


Virtual Analog DrumsynthGet Ruismaker on the Appstore

A drum synthesizer in the spirit of the iconic drum machines of the 20th century. No sampled sounds are used. Every single sound is fully synthesized using analog models, emulating electronic components – Introducing subtle differences in every hit; just like in the old days.

Kicks, snares, claps, toms, cowbells; each drum sound has its own independently modeled virtual circuit. Ruismaker has dozens of unique sound models, each one lovingly handcrafted to offer a signature character that can be personalized to match your tracks.


Ruismaker FM

FM Percussion SynthGet Ruismaker on the Appstore

Ruismaker’s crazy twin-sister. Based on a clever FM synth model engineered to let you create a vast bandwidth of different sounds from scratch. From kicks and snares to alien sci-fi effects, growling bass sounds, zaps, blibs, chirps, wows, hits and hats. Easy to learn, fun to master.

Ruismaker FM makes for a great companion for Ruismaker (and shares its signature sound character), but also holds her own as a versatile drum synth. Create your own sounds, or use included presets as a starting point (and easily share your sounds using the Patch Sheet feature).



6-Operator FM SynthesizerGet Ruismaker on the Appstore

A powerful FM synthesizer building on the tradition of the classic 80s FM synths. Perfect for lush digital sounds that can not be achieved using (virtual) analog synthesis. Hands-on editing, 42 FM Algorithms, rich oscillators (including the 8 original TX81Z waveforms) and 32 note polyphony. 

Whether you’re looking for long evolving pads, rich bass sounds, raspy leads, bells or pulsating drones: FM is a synthesis technique unlike any other which will always help stand out in a mix of virtual analog sounds. Phasemaker offers the full 6-operator package, without the daunting esoteric programming of the 80s classics.


System requirements:

Audio Unit Plugins require an Audio Unit compatible host or sequencer, such as Garageband, Auria, Cubasis, Modstep or AUM.
Audio Unit Extensions works on iPads (iPad 4, iPad Mini 2 and up) and iPhones (iPhone 5S and up) with iOS 9 or higher.

Ruismaker - Virtual Analog Drum Synth


Dozens of carefully crafted synth-models instantly recreate a variety of legendary analog and FM percussion sounds

Easy access

Effective UI gives access to the most important parameters to completely personalize the character of each sound

no samples

Authentic realtime analog synthesizer algorithms, so everything sounds natural and alive. Each hit is subtly different.


Ruismaker FM - Percussion Synth

roll your own

A vast universe of drums and effects waiting to be explored using Ruismaker FM’s streamlined UI concept


FM synthesis, but redesigned with percussion in mind, lets you design your own kicks, cymbals, snares, effects and more. 

Full automation

Realtime synthesis lets you automate and dynamically change any aspect of every sound on the fly.


Phasemaker - FM Synth

6 Operators

6 operators give you the freedom to design dynamic, multi-layered sounds. Each operator can be individually programmed.

42 Algorithms

42 FM algorithms (including all 32 original DX7 algos) offer a vast bandwidth of intricate signal routings.

standalone mode

Phasemaker also offers a standalone mode; compatible with Audiobus 2, CoreMIDI and Bluetooth MIDI