We have a massive end of the work week giveaway for you thanks to Cellaflora Design. Today we’re offering up 20 promo codes for Tonalverse for iPhone ($.99) along with an additional 20 promo codes for Tonalverse for iPad ($1.99).

Tonalverse is a generative music app that is not only meant to entertain but also distract your mind with ambient tones that can be produced in a multi-touch supported graphical universe.

Make some noise

Tapping the screen in Tonalverse will create a single tonal sphere with the pitch of the tone based on the location of your tap. Each sphere’s tone is then added to a loop in order of appearance, allowing you to create complex sounds by tapping multiple times and places on the screen.

You can cause spheres to collide to create even more unique sounds by tapping and dragging them across the screen, and you can activate additional interactive properties like gravity and walls by tapping on the blue and green circles in the bottom right corner of the screen.

If a sphere leaves the screen it will be lost forever and its tone removed from the loop. All spheres can be cleared from the board as well by simply tapping the red circle in the corner of the screen.

To have a chance at winning one of our 40 Tonalverse promo codes, simply leave a comment below before 11:59 PM PDT tonight (September 2nd) telling us whether you would prefer the iPhone or iPad version of the app. Seriously, that’s all you have to do. We’ll then randomly choose our winners.

Only one entry per person is allowed. This giveaway is open to all of our wonderful readers.