Eventide Crystals Harmonizer® combines twin reverse pitch shifters with reverse delays and reverb. This iconic H3000 effect can be used to create out-of-this-world climbing and cascading pitched delays or to create unique sounding reverbs. It features two reverse granular delays that can be manipulated by length and pitch. Crystals excels at adding life to boring synths, guitar, and vocals making them sound huge and majestic. From sound design to other-worldly solos, Crystals will spark inspiration.

The innovative RIBBON control allows you to modulate many parameters at once. Manipulate the pitches to play it like an instrument or slowly increase feedback to make your signal explode into infinity. Need some extra gusto? Hold down the FLEX button to shift one octave up from the current pitch.

- Two pitch-shifters, each with a four-octave range from two octaves down to two octaves up
- Two independently adjustable delays, up to 4 seconds each, with their own individual feedback
- Reverb with 100 seconds of decay
- Make it musical by micro-pitching each voice around the 4th (500 cents), 5th (700 cents), or octave (1200 cents)
- Smooth out delay grains by applying up to 4 seconds of delay for each voice
- RIBBON lets you ‘play’ the effect in real-time and provides dynamic and fluid control to morph back and forth between the settings of your choice
- FLEX shifts both voices up one octave at the push of a button
- MIXLOCK keeps MIX control constant as you audition presets
- Available as an Audio Units AUv3 plug-in and Standalone App

What’s New

Version 1.0.9

Added new artist presets.

Ratings and Reviews

4.7 out of 5
14 Ratings

14 Ratings

Enrique Raphaël Page Pérez ,

Dear Eventide

The app is fantastic as USUAL with you guys. Thank you so much for the super quality!

One thing though:

The ribbon controller on this one isn’t working, the ranges can not be set. You can try it out and you’ll see that attempting to modify the ranges in the same way it is done in pretty much all of your apps simply doesn’t affect Crystals’s ranges, those are simply un-settable right now.

Hopefully you can fix this soon!

Cheers !

Eventide is fantastic 💜

Developer Response ,

Hey, thanks for the report. We have a fix for this and it will be released shortly.

bluemeanieface ,


Great. Just listen to some demos and you’ll be downloading before you know what’s happening

Davepublic ,

Keeps crashing in AUM

Love the app, sounds amazing, but having consistent issues with it crashing in AUM and having to be closed and reopened, sometimes multiple times a session.

Developer Response ,

Hi, please contact us at and we can look into the issue for you. Please let us know the version of iOS, AUM, and if you are using IAA or AUv3. Steps to reproduce the crash would also be helpful. Thanks!

App Privacy

The developer, Eventide, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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