About this app
One synth. Endless possibilities. Microton FM is a virtual FM synthesizer with a fresh approach to making microtonal music. At the heart of the Microton FM is the ‘monochord’: a touch-sensitive visual representation of the instrument’s current tuning as a simple line segment. Selecting a built-in tuning (ranging across antiquity to the 21st century, from cultures around the world) will automatically update the monochord, displaying the unique mathematical relationships of that tuning’s elements. Users can directly interact with the tuning’s elements by moving its icon along the monochord with the touchscreen, or by modifying the element’s properties via the Element Editor. Adding and deleting elements from the tuning is as easy as a button tap. Want to dive deeper? The Element Editor supports mathematical expressions as input, allowing you to precisely sculpt your tuning. Once you’ve created your new tuning, you can also redesign the visual keyboard — modify each key’s color, name, and key rank to completely personalize your tuning. Microton FM’s sound engine produces the harmonically rich tones inspired by classic FM synths of the 80s and 90s. The two FM operators (6-voice polyphony, 1-voice mono) each produce four selectable waveforms which can be further shaped with the controller and modulation parameters, allowing for spacey digital pianos and mallet sounds, searing leads, otherworldly digital soundscapes, and everything in between. Microton FM runs on desktop, iPad, and your favorite DAW as an Audio Unit v3 plugin. Make something new. Invent your own system. Visit https://euclidean-instruments.com for full documentation, sound samples, and more.
Latest release
What’s New
Full AUv3 support on iOS; added main menu with output monitor, MIDI reinitialization, and other features; updated sound engine for increased device compatibility.
Audience growth
Ratings growth
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Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 24, 2026 · 11:48 AM $4.99
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