Song used in this video: "Floehang" by Christopher Rice


Music App Blog ( 

"This is a well conceived effects processor that has a very seductive sound. Whether it is just a bit of stereo enhancement you are after or some more obvious stereo ear candy, Stereo Designer is just the thing."

Love it and needed it. ★★★★★

by CoopMusic247 - Version 1.0 - Feb 19, 2014

Oh this is gorgeous. I like to use it for simple stereo widening and for summing things to mono. Great tool to use inside stuff like Auria. I use Timeless for crazy stuff, but this is perfect for its simplicity. Excellent product.

Wonderful, & unique in the App Store ★★★★★

by Jonnycapes - Version 1.0 - Feb 18, 2014

This is what I've been searching for! This app is unique in what it can do (as far as I know) in the App Store. I'm a big fan of this dev's previous apps but to me this is the most useful of all: I'm primarily a guitarist & have been craving a way to get stereo widening for my guitars on iOS - there hasn't been a really good way to do it until now, but this app meets that very specific need wonderfully. Yes, you can double track guitar parts and pan hard left and right manually (& I will continue to do so at times) but this app is extremely useful for creating that elusive very tight stereo panned effect! Fan-ruddy-tastic! This is really top drawer & would make a fine addition to ANY recording set-up (let alone iOS recording). Can also add depth & sparkle to any other types of sounds, instruments or recordings - I'd highly recommend this app to any iOS musician. NB. Do remember to check your stereo recordings on a mono speaker as well though - what sounds amazing on a pair of stereo headphones might sound downright weird on a mono speaker.

Another essential effects app ★★★★★

by Uuiubn - Version 1.0 - Feb 13, 2014

No apology...I'm becoming a fanboy of holderness media apps. Another essential app for anyone wanting to process audio.

Stereo Designer is an easy to use multi-purpose stereo shaping tool for Audiobus and Inter-app Audio. Create unique wide stereo images, "stereoize" a mono sound source, apply mid/side processing, independent high and low pass filters per channel, and more.

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

Stereo Designer features two distinct modes: 


● PERFORM mode is focused around four XY touch pads. Touch to control LOW PASS, DELAY, PAN and OUTPUT gain 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, Stereo Designer 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 Pad and Swoopster!


● requires iOS 12.4 or later 

● iPad Mini/iPad 2 or newer 

● Audiobus compatible (Effect,Input) 

● Inter-App audio compatible (effect node) 

● compatible with USB audio interfaces 


● Control individual Left/Right channel volume, panning, filter and more.

● Mid/Side (M/S) processing mode lets you adjust the volume, high and low pass filters for Mid and Side independently. 

● Widen or reduce the stereo width of an input signal.

● Independent panning position of each channel, allowing for interesting stereo placement.

● Individual High and Low Pass filter per channel for additional stereo shaping.

● Phase (polarity) invert Left/Right channels.

● Isolate the Left or Right channel and manipulate the resulting mono signal.

● "Stereoize" mono inputs using individual channel delay + High and Low Pass filters.

● Sum Left and Right channels to mono.

Stereo Designer 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 

● iRig 

● iRig HD 

● iRig iMic 

● Focusrite Scarlett series (*requires USB hub) 

● Alesis io2 

● Alesis IO Dock 

● Behringer UCA202 

● many more 

iPhone, iPad, and iPod Touch are trademarks of Apple, Inc.