FAC Chorus is a versatile chorus effect emulation designed to simulate the characteristics of the classic chorus modules with the flexibility of customising the parameters of the main components involved in the signal path.

The interface has a unique sober look and provides a great user experience. The knobs are very responsive, natural and follow a specific curve according to the parameters type.

The efffect is built upon two individual delay line paths controlled by common parameters. The behaviour of each delay signal path is defined by the chorus type parameter. Thick type means warm characters and emulates the behaviour of the BBD. Clean type, as the name says, provides a cleaner sound with a larger modulation.

FAC Chorus is suitable for any situation requiring chorus effects and can go from subtle to drastic changes, the factory presets provide an overview of the sonic panel you can obtain.

What's New

Version 1.3.1

- Fix compatibility issue with previous versions

Ratings and Reviews

4.9 out of 5

18 Ratings

18 Ratings



This is one of those apps where I pretty much try it on every track. It’s that good. Can’t say I leave it in place, but I’d say about 75% it stays.

This developer also had another app called Maxima that’s sort of an intelligent maximizer/exciter with a limiter function built in. I don’t understand the voodoo under the hood, but it consistently makes everything sound better. This one I add for every track, and then leave it about 90% of the time

Both of his current Chorus & Maxima apps take iOS sound to a more professional sounding level. Highly Recommended!

FAC is fast becoming one of iOS music production’s MVP’s


I had to come back and rate this superb chorus after FAC’s newest app Maxima came out to give this app its due. Sometimes when you discover a great app you jump right in using it and forget to go back and rate or write reviews. My delay rating the FAC Chorus falls into that category. This chorus is so good, so lush & organic, you can get lost in it’s ability to turn a normal synth pad into a velvet cloud of sound. Try this on Rhodes, acoustic guitar, background vox...seriously first class, professional chorusing that would make an Eventide unit blush. Highly recommended.



A chorus effect is not something I really needed for my iOS music pursuits, or at least that’s what I thought. Adding some subtle depth to a soft synth can create new characters of sound. But FAC Chorus is easy to use and can also be super sweet and creamy and put some thickness to your sounds. I love it! Essential!


Frederic Corvest
23.1 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
©2017-2018 FAC Fred Anton Corvest


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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