A chaotic musical instrument for iOS. Catalyst will change the way you think about your iDevice.

Record your voice, your surroundings, or even your favorite songs onto Beatballs that play whenever they hit the edges of your device. Fling them at (near) light-speed, at a tortoise's pace, or to the rhythm of your favorite song to create personalized, infinitely-long compositions. Change the speed coefficients and decelerations of the balls, or the individual sizes, to make ridiculous tracks that you'll want to play for hours.

Emulate your favorite video game, create a symphony, or even put together live mash-ups of pop songs. The stage is set— are you ready to pick up the baton?

What's New

Version 1.2

・Designed from scratch for iOS 7
・Improved dynamics and physics engine
・Deceleration and Speed Coefficient sliders
・New About and Feedback sections
・Improved re-recording, deleting, and playing functions
・Added Collect option to restore Beat-ball order
・Various bug fixes and improvements

Not only is this an entirely free update, Catalyst itself is now a free download! Enjoy playing and making music with your friends, and get ready for even crazier new versions next year.

Ratings and Reviews

If its your type of thing


If i had an amazing voice like a rapper or pop singer this would be great for me. But I'm not. So this is pointless, for me at least. But im not going to rate this off of my skills as a singer. So to be fair im giving it a 5. Star rating for anyone else with that perfect voice who can use this. Because chances are they would love this app

Needs Improvement


Great app, just needs work. 1) give me the in-app option to clear it out; 2) give me an option to delete a track; 3) explain the effects corresponding to the position of the ball; 4) allow a neutral zone to have a clean undertone while other effects play.

Awesome work!


Great app for entertainment and having fun with noises! Beautifully designed and intelligently developed by my great friend.



Julian Weiss
20.5 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2013 Julian Weiss


  • Family Sharing

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

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