Ruismaker FM 4+

FM Drumsynth AUv3

Bram Bos

    • 5.0 • 53 Ratings
    • $4.99



Here comes the the crazy twin-sister of Ruismaker, designed for people who want to design their own percussion sounds from scratch.

Ruismaker FM's simple, yet flexible synthesis engine lets you create anything from snaredrums, kickdrums and spacy toms to weird and unconventional percussive sounds and effects.

Ruismaker FM is a unique drumsynth plugin (i.e. it does not use samples), which is coupled with a creative Euclidean sequencer when run in standalone mode.

The plugin is fully AUv3 (Audio Unit) compatible:
- Seamless integration with Garageband and other AU hosts
- Audio Unit Instrument: making music on iOS doesn't get more convenient
- Supports AUv3 Multi-Out in AUM and ApeMatrix
- Each sound is modeled using authentic analog and FM algorithms;
- Comes with dozens of unique customizable models
- Does not use any samples; all sounds are synthesized in realtime, on the fly
- Light on the CPU, so you can run lots of Ruismaker FMs simultaneously
- Fully automatable parameters (requires host support) and MIDI CC controllable
- Has its own preset manager

The standalone sequencer is refreshingly different:
- Program patterns using Euclidean algorithms
- Powerful random feature and mutation probability settings per channel
- Syncs with Ableton Link or MIDI Clock
- Exports WAV and MIDI
- Compatible with Audiobus 3 (including MIDI IN/OUT mode)
- CoreMIDI In and Out
- AU MIDI output for on-screen pads

User manual available on

What’s New

Version 2.5.3

Minor fix in the WAV export feature.

Ratings and Reviews

5.0 out of 5
53 Ratings

53 Ratings

EthanGross ,

Bram’s Forgotten Stepchild

Dear Bram Bos, I hope this message finds you well. Your creativity and dedication to your work are truly commendable. Among your remarkable creations, Ruismaker FM holds a special place in the hearts of many users. As we progress into 2023, it would be a shame to see this gem of an app left out in the cold, like the proverbial red-headed stepchild.

If we could personify Ruismaker FM, it might be standing there with puppy-dog eyes, longing for the warmth and attention it truly deserves. We all know that every app, just like every child, has its own unique potential. By giving Ruismaker FM a little love and attention, you'll not only bring joy to its loyal users but also let the app shine bright and realize its full potential.

We eagerly look forward to the wonders you'll bring to this already amazing app, and I'm confident that with your touch of innovation, Ruismaker FM will continue to be a go-to app for many years to come. Thank you for your continuous efforts and for making a difference in the world of software development!"

TheDudeAbided ,

Creative Drums

Drum sounds here are created from synthesis, not samples, great way to create your own custom kits. foF those not used to creating drum sounds from scratch, there are a large number of useful presets to start from.
What really stands out though is the sequencer, which allows you to put a different number of steps on each of 8 tracks worth of drum sounds, so you can have different loop points and get very interesting polyrhythms, which you can make more interesting by adding some mutation variation to the sequences. you can multi out the separate parts in something like AUM, but it still works on good old IAA, and you also have the option of saving any loops as WAV files and exporting to the DAW or sampler of your choice.
Very good for people making techno, minimal, IDM, acid, but not limited to that

Drawsolderprintplay ,

Intuitive, fun sequencer and great 80s sound

FM synthesis is not intuitive or straightforward, but Bram has written a great manual ( available on the website) that explains how to use the controls to get interesting sounds out of this app.

The Euclidean sequencer is great- I’ve been using it to make odd-time loops and Radiohead-style polyrhythms, and it is very straightforward to understand and fun to play with

App Privacy

The developer, Bram Bos, 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

    Up to six family members can use this app with Family Sharing enabled.

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