2026-10-27

JellyDazzle and KoiKnife Are Out on iPhone, iPad, Mac and Android

Two apps from LIBCSystems are now out everywhere: JellyDazzle, the music-reactive kaleidoscope, and KoiKnife, the Swiss Army Knife of koi knowledge. Both are on the App Store for iPhone, iPad and Mac, and on Google Play for Android. Both are free on the App Store.

JellyDazzle

JellyDazzle turns your screen into a kaleidoscope that listens to your music and dances to it. Put on a song, from Spotify, Apple Music, a speaker across the room or a band in a bar, and the patterns move with it. It listens through the microphone, so your music keeps playing at full volume while the colors fold into symmetry and back out again. No loops, no presets, no two sessions alike.

JellyDazzle on iPhone: a glowing kaleidoscope pattern in pink, green and blue around the JD logo
JellyDazzle on iPhone.
JellyDazzle on iPad: a soft kaleidoscope pattern in pink and orange around the glowing JD logo
JellyDazzle on iPad.

Get JellyDazzle:

KoiKnife

KoiKnife is everything a koi keeper, buyer or admirer needs, in one beautifully illustrated app. It is presented with B&M Aquatics of Hamburg, New Jersey, family owned since 2003.

KoiKnife on iPhone showing the Kohaku variety: a red and white koi photograph, kanji name, rarity and typical price
KoiKnife on iPhone: the Kohaku variety card.
KoiKnife on iPad: the home screen with koi of the day and a grid of tools including Identify, History, Prices and Supplies
KoiKnife on iPad: the toolkit.

Get KoiKnife:

Open source

Both apps are open source under the MIT license.

Both apps are made by LIBCSystems in Long Island, New York.