Looking for a rich chorus effect without a muddy low end? Zero Chorus is a high quality Roland Dimension D style chorus plug-in. The addition of a feedback control improves versatility by enabling flanging effects.

Zero Chorus is an Audio Unit Extension (AUv3) that works inside host apps. Just open up your favorite host that supports Audio Units and add it as an effect. The controls expand when touched so they can be easily seen while tweaking. Zero Chorus brings a superb chorus algorithm to your favorite iOS DAW. Compatible with GarageBand, Cubasis, Auria, BeatMaker, AudioBus, AUM, Modstep, and more.

Blamsoft brings their experience creating top notch plug-ins for the desktop to iOS. The same algorithm is found in the popular Zero Hybrid Synthesizer Rack Extension for Propellerhead Reason. The available parameters allow you to dial in a wide variety of chorus effects, from transparent to heavy. It's great for thickening electric guitar or synth parts. You get a desktop quality algorithm at an iOS friendly price.

Tap Developer Website for sound examples.

Note: Second screenshot shows the effect of touching a control.

What’s New

Version 1.0.6

Updated iOS SDK and App Store metadata

Ratings and Reviews

3.9 out of 5
20 Ratings

20 Ratings

henrylizarraga ,

Does it work with GarageBand?

Does this work with GarageBand? I bought this app but I can’t find it on the GarageBand extension.

Developer Response ,

In GarageBand, tap "Plug-ins & EQ". Then tap "Edit". Tap a green plus sign button to add an effect in an empty slot. Then you will see "Audio Unit Extensions". Choose Zero Chorus from the list.

Mick Messer ,

Blamsoft Bundle. Great sound but prohibitive problems in GarageBand

I bought the bundle. I applied the plugins to tracks on my recordings and it sounded fantastic. I went to several of my other songs and added chorus, filter and reverb. Once again marvelous. I took a break and went back to my remixes and then problems started. All tracks no play. Sometimes just drums and a guitar. Sometimes bass and drum. Keyboard tracks won't play at all. As I didn't apply the app to drum tracks and this issue hasn't occurred before, it must be app related.

This app has high potential and the effects are great, but the above described problems renders it a bust. Hopefully this is a bug they can fix. I checked their website but couldn't find a link to contact them for support. I also hope this app didn't wreck some of my favorite work.

If they fix this issue, then it's a Five-Star app.

Developer Response ,

Both GarageBand and Zero Chorus have been updated since this review. It should be working properly now.

hiiiii668546 ,

Cool app

I just started to get into music and I needed some extra extensions to help me out this app works great kinda hard to set up at first but after that cool


Blamsoft, Inc.
29.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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