It would be nice if that echo box worked properly, instead of stretching and warping like this. Maybe you shouldn't have dropped it in the bathtub. We're not looking to place blame or anything, but, you know. Butterfingers.


Apply Nebulizer to live audio input or connect with other music apps such as GarageBand, Auria and Cubasis via Inter-App Audio or Audiobus. Nebulizer supports Audiobus state saving, IAA transport controls, MIDI learn and iOS 9+ multitasking in both split screen and slide-over modes.

Note that Nebulizer does *not* provide an Audio Unit extension. Porting the underlying tech to the AUv3 environment is sadly not practical. I know this is disappointing, but Nebulizer and its sibling apps are stuck in their historical moment; when IAA goes away, so will they. Perhaps something else will come along to take their place...

What’s New

Version 1.1.2

Updated to work with iOS 12.4 and higher. In particular, this fixes the issue of always connecting to the device microphone when brought to the foreground after being launched from an IAA host such as Audiobus or AUM. Also, the layout is adapted for "notch" devices like iPhone X.

Ratings and Reviews

4.7 out of 5
16 Ratings

16 Ratings

Ronzlo ,

What are you waiting for?

To the Dev: you may not know it but you're making a lot of musicians' lives better - noticeably - every time they fire up their host DAW and one of your free plugs is there to make their tracks better - noticeably.

Thirdnail ,

Yet Again Matthew Caldwell pulls off a perfectly USABLE effect!

This guy is an amazing developer! I mean you can put any of his apps through the ringer and configure it with any other DAW or music apps and never have an issue! If you haven't already download the other 2 free apps...there no catch no gimmicks no BS ...JUST CLEAN WORKING EFFECTS!

Thanks again M.C.

-Scotty S.

Herman Muenster ,

Another unique must have...

Seriously, this dev has managed to make some of the most unique apps in a huge field, and they're free!
If you've read this far, just get it, fire up Audiobus and put it on anything, tweak away to crazy delay nirvana.


Matthew Caldwell
18.1 MB

Requires iOS 8.0 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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