Here's what users are saying:

Pure magic ★★★★★

by Amphoteres - Version 1.0 - May 27, 2014

Gives new meaning to the word lush. Absolutely phenomenally outstanding 

EPIC!!!!!!!!!!!!!! ★★★★★

by stormbox79 - Version 1.0 - Jun 21, 2014

If you play guitar, synths, or basically anything sound related, you NEED this app. Every single time I fire up Audiobus, this app ends up in the effects slot. Send a guitar thru this and end up in another galaxy, it is that good. Channel your inner pink floyd, call down a heavenly choir with your favorite synth app, just click buy and awesome becomes tangible!

Woah, great! ★★★★★

by Galaxyexplorer - Version 1.0 - May 2, 2014

If there is one iOS FX app to choose... well, it's this fantastic app. Point.  

Mesmerizing ★★★★★

by trance79 - Version 1.0 - May 2, 2014

This is one of the coolest effects with so much depth and massive amounts of sonic possibilities. It produces a truly mesmerizing, almost magical, quality to any instrument or sound. Do yourself a favor and buy Crystalline, now.

"Wow Holy Cow! Guitarism 12- string into Crystalline and I thought it sounded like 'Under the Milky Way Tonight'. I can't think of an instrument that would not sound fantastic with Crystalline. IGrand, Galileo, Sunrizer(holy another cow!), IPolySix all sounded like awesomeness." - NoiseHorse (Audiobus forum)

"Crystalline isn't what I was looking for many years... IT'S MUCH MORE!!! I just can't stop using it!!! By far, the best effect for guitar I've used in my life!!! Thanks again!!!" - Leonardo Leite De Castro (user)

Crystalline is a unique Shimmer Echo/Reverb effects processor for Audiobus and Inter-app Audio. 

Process synths, drum machines and hundreds of other apps by connecting through Audiobus. Use Crystalline as an effect inside Garageband, Auria, Cubasis, and AudioShare using Audiobus or Inter-app audio. 

Crystalline features two distinct modes: 

● PERFORM mode is focused around four XY touch pads. Touch to control DELAY TIME, FEEDBACK, REVERB LEVEL and LOW PASS independently for left and right channels. 

● TWEAK mode features large expressive sliders and additional effect parameters, allowing you to fine tune your sound. 

In addition to Audiobus and Inter-app Audio support, Crystalline can also process external instruments such as guitar, voice and synths by connecting a microphone or professional audio interface such as the Apogee Jam, ONE, or any iOS compatible USB audio interface. 

Check out our other FX apps including Echo PadStereo Designer and Swoopster!

● requires iOS 8.0 or later 
● iPad Mini/iPad 2 or newer 
● Audiobus 2 compatible (Effect,Input, State Saving) 
● Inter-App audio compatible (effect node) 
● compatible with USB audio interfaces 


● Control left and right channel effects parameters independently or linked.
● 16 delay modes for a wide variety of pitch shifted delay effects.
● Multiple stereo output modes including: Wide Stereo, Cross Feedback, Stereo Tremolo and Sum to Mono
● Huge range of ambient sound effects possible, from beautiful shimmering reverbs to dissonant, metallic delays

Crystalline works with just about any professional iOS compatible USB audio interfaces. Here is a list of interfaces that have been tested and verified to be compatible: 

● Apogee Jam 
● Apogee Mic 
● Apogee ONE for iPad/Mac 
● Apogee DUET for iPad/Mac 
● Apogee QUARTET for iPad/Mac 
● iConnectMIDI2+
● iConnectMIDI4+
● iRig 
● iRig HD 
● iRig iMic 
● Focusrite Scarlett series (*requires USB hub) 
● Alesis io2 
● Alesis IO Dock 
● Behringer UCA202 
● many more