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, Inter-App Audio, and Standalone App

Ratings and Reviews

4.9 out of 5
11 Ratings

11 Ratings

JohnFBP ,

iOS game changer

Turn one synth track into an orchestra/We are Eno now/Just do it.

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!

housemachine ,

Effin Bananas!

This ish is the bomb! Love eventide you guys are animals!


Eventide Inc.
17.2 MB

Requires iOS 11.0 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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