Flux Mini is an AUv3 audio effect that adds life, character and dynamism to your tracks. The customisable graph creates a shape which affects either the amplitude, low-pass filter or high-pass filter. You can emphasize the frequency modulation with the resonance knob too!

New: route MIDI to the plugin to trigger the envelope. MIDI note-ons can either retrigger the envelope or trigger envelope one-shots.

From simple side-chains to manic modulations, sculpt some life into your sounds - flux it up and have some fluxing fun!

Pre-loaded with 20 presets to get you going, it won’t be long before you’ve built a plethora of shapes to accentuate your fantastic music.

As it is an AUv3 plugin, it works within iOS and iPadOS hosts such as Garageband.

What’s New

Version 1.1.2

WARNING: version 1.1.2 adds MIDI input so your host may not recognise it as the same AUv3. Please render any important audio that uses Flux Mini before updating.

New Feature: MIDI triggering.
New Improvement: Sync time ignores small inconsistencies in the hosts reported sample position, providing smoother modulation.
Bug Fix: Fixed an issue which could cause a click on load.
Bug Fix: Removed clicks when changing sync value.
Bug Fix: Fixed an issue where the plugin may not load graph settings from save file correctly.

Ratings and Reviews

5.0 out of 5
20 Ratings

20 Ratings

ReniGhost ,

Fun and sounds great

I’ve been wanting an iOS plugin that does something similar to what XFR’s LFO Tool VST does on my PC, and this little mother fluxer is a good start. It’s super fun to use on all kinds of synth and drum apps, and it’s free! Thanks to the dev(s), and I hope you consider adding some advanced features in the future, I would be very happy to do an in-app purchase for that!

Ronzlo ,

It just works.

While the general principle behind this effect isn’t particularly novel - it just sounds *great* and is really good at adding movement and life on most anything it’s used for. Thanks Caelum Audio!

Cooldaddysuprememasterkilla ,


This is the bomb diggity. Currently it’s breathing new life into an old Korg of mine. Very dynamic and fun. Highly recommended.

App Privacy

The developer, Caelum Audio, 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


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